Everything you need to know about the new Prusa MK4!

Get the Prusa MK4 go.toms3d.org/MK4
Timestamps:
0:00 Intro
1:03 Load cell autoleveling
2:05 Live adjust Z?
2:28 Nextruder toolhead
3:14 Cold-swapping nozzles
3:26 Nozzle options
4:06 Why not Revo?
4:52 Stock hotend performance & modding options
6:25 Third-party nozzles (patents?)
6:37 Input shaping
7:41 Input shaping challenges on i3-style printer?
8:04 Printer performance goals
8:57 New motors (VFAs)
10:05 Additional wear from higher speeds?
11:33 New touchless user interface
12:34 New bed, compatibility to MK3
13:22 New extruder & suitability for flexibles
14:45 Filament sensor
15:40 Potential future use of the load cell
16:31 Additional sensor on toolhead
17:39 Toolhead daughter board
18:35 New mainboard
19:44 Networking features
21:11 Offline printing options
22:44 Still using TMC2130, more VFA fix details
23:56 Issue 602
24:37 MK3 upgrade options
26:20 End of life for previous machines
27:41 Multi-use firmware
28:09 SMT line tour
28:56 Pricing and product goals
30:38 Why still use printed parts?
32:23 MMU3
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[@lupeters213]

Their reliability is almost a problem for them. I would get a MK4, but my MK2.5 is still going strong as ever.

[@andybrice2711]

But this also means they maintain some resale value. Maybe you could upgrade to a used MK3.

[@3DCheck]

how much print time do you have on it?

[@Nisse977]

I have a Mk2+ with a 2,5 upgrade that I have not yet installed 😄 I have used the printer since 2017 and it never failed in anyway 👍 But it would be fun to have a Mk4 :)

[@cupbowlspoonforkknif]

Yes and no. If they have private investment or were publicly traded then yes the pressure for infinite exponential growth would force them to make crappier products until they implode or get bought out. The idea of shareholder supremacy that took hold in the 70's and has been f-ing us and the planet over ever since. If not then the only reason to grow is to help as many people as possible. They can grow organically as needed and keep doing their thing slow and steady. I don't know if they have outside investment. I don't think they're publicly traded though. I hope they never are because it will destroy the company. As it stands, I assume they don't need to sell more and more printers every year as long as they break even financially.

[@davidgilbert6]

@@cupbowlspoonforkknif I might take you seriously when you do one or more of the following three things: 1. Start your own company and decide you don't need to make any money at it. 2. Invest all of your money in companies that decide they don't need to make any money at it. 3. Try to work for a company that decides it doesn't need to make any money at it. Any company that ever existed without startup investment, or decided that it didn't need to provide a decent return to whatever entity made an investment in it, didn't last very long.

[@lisasei-leise287]

It seems that Josef Prusa is quite proud that they are printing all parts on a farm made of their own printers and I really like that. He has a point here. Edit to add: It’s just as if the tone of the replies gives away the writers opinion on the topic.

[@testboga5991]

It's idiotic because much more expensive than molding

[@derrogers]

​@@testboga5991 not the point. by printing all parts on their machines they prove their reliability and form a brand identity...more valuable then the cost savings by using injection molding...

[@wachocs16]

@@testboga5991 It's not idiotic because at all because of psychology -They sell at high price because they are Prusa and it's all open source "hand made" printers (not some chinese factory where everything is efficient to get the lower cost), so, they can pay the expenses (and they make their own filament) -3d printed parts sometimes are not as good as injected ones, but you know you can reprint it exactly the same in your house or at a frinds one -3D printed parts have some notorious artifacts or specifics details of the printer used. You will know if a Prusa MK3 was printed originally from Prusa or with a cheap ender 3 without linear advance, blobs or glass bed. That's why people like to see the printer they buyed from Prusa will print at the same quality as it's printed parts (or better)

[@genericcommenter1148]

​@@derrogers I believe this was said in the video, but it also allows them to experiment with many different designs and make adjustments even after the launch of the printer based on user feedback.

[@Redstoneghost133]

@@testboga5991 it provides 2 grounds of conversation; 1) The message it provides 2) where his priorities are. Yes injection moulding is far cheaper on a mass scale which allows him to replace that entire room with just two or three injection moulding machines, and allows him to sell more printers at a cheaper price. However, that does not support the 3D printing message. Josef is a designer and a maker, his design is so important to how we the public, the rest of society, views this design he has created (with or without help is irrelevant, it's ultimately his design and his decision). If the parts were from injection moulded parts, even if you went the further length to added artificial print lines into the moulds to replicate the effect of printed parts, it loses it's value in the sense of a '3D printed' 3D printer (do you see my point there? It's more about the message). Secondly, the fact that he is invested in those machines so much, shows you a few things: He does not care about the cost of his design, as he publishes his design for free for you to make yourself, but he charges you the labour and time it takes to make the parts himself. Secondly, he cares more about positively proving to everyone, "yes you can do this, if you have a design you truly care about, look, this is what I did, and here, if you would like some help to make your design, I'm happy to help :)", not in a malicious sense, but in a friendly and encouraging way. Injection moulding has an association stereotypically consisting of China, cheap quality, quick to break, bad colouring, replaceable, 'throw-away'... however 3D printed parts and products have a different association, stereotypically consisting of modern, *the word that describes a lot of time has been invested into something *, skilled, personal, well-thought out, well designed... We as a world have given these labels, and so Josef sees that if his parts are all 3D printed, the community knows that they have been a part of his journey to help create the new form of manufacturing we have been seeing since the 00s. So I don't believe he's idiotic for 'wasting money' on his chosen manufacturing method. There's a lead time on most products you buy new today, that's why you either make it yourself or buy it 2nd hand; like cars (I think lead time of 2 years for Tesla? Not sure on that). Feel free to critique my perspective, but as a design engineer (what an oxymoron amirite?), I feel it's important to analyse all factors from beginning to end to truly see the reasons why one takes decisions they take. :)

[@YouTubsel]

And I really love their stance on priorities. Producing locally and fair, as well as keeping everything open and self testing all the parts constantly are values I really like. I'll stick with Prusa for these soft factors alone. I don't need one. But I really want one now. :D

[@henrymach]

Backwards compatibility is a good thing. There's nothing wrong with V6 style nozzles

[@MartinJahn]

@@dggcreations How does dragon HF manages to be high flow when it still uses V6 nozzle? Though my dragon is still waiting for rest of the Voron to be assembled. So not speaking from experience.

[@Todestelzer]

I Push 30mm^3 with my Dragon HF and a 0.6 CHT nozzle. I don’t need higher flow rates. Voron 2.4R2.

[@viru52000]

​@@dggcreations they said nozzle, not the entire hotend. The vast majority of nozzles used are V6 specs, and the top selling high flow setups use them (Dragon, Rapido, etc)

[@ScytheNoire]

Unless you have a Revo, and then you don't want to go back.

[@HotboiEngineering]

@@dggcreations Damn that's crazy but the fact the Bondtech CHT exists makes everything you said a blatant lie.

[@MadeWithLayers]

Thanks to everyone who submitted questions on Twitter and Mastodon!

[@BlackOmegaVirus]

Thank you very much! ❤

[@tomheijnen2141]

Gigop pp hpppppoo😊😅😊

[@jonnyhifi]

And well done to you Thomas . This video I found so much more informative and easy to watch / listen to than the prusa live stream announcement - which was double the length . You add a real, huge amount of value by working out what to ask, asking those questions, videoing showing detail clearly, and lastly editing it into a whole. Also well done to Josef and esp Mikolas who have such deep knowledge and are so clear in their explanations. I have nothing but admiration for how clear they both are in English - not their mother tongue, they like yourself are far more expressive than many native English speakers in English. Very impressive. Thank you.

[@Mike01Hu]

Thanks, Tom, for a fine video. Your questions were incisive as usual and have helped me make up my mind to upgrade. My Mk3 will become the support machine, still reliable after 1000's of hours work; all the upgrades are done, including Revo, but now's the time for change. Although faster prints are attractive, I still worry about the speed versus structural integrity of printed engineering parts, so I hope the Mk4 exceeds the MK3 in this field.

[@ericlotze7724]

Another thing too is you can make the old V3 into an Open5x Machine, and still have a standard 3 Axis Machine with the New Mk4 !

[@cidadaoPPT]

Good engineering will always be respected, even though not understood by most! I have the utmost respect for the choices done by the Prusa team. From their commitment to open-source and open hardware to their attention to backwards comparably. I never bought a Prusa, but their long track history will be the main reason why I will buy one.

[@wardy89]

Reading the comments it’s clear that a lot of people don’t understand the cost implications of building printers in Europe vs made in China. Also the mk4 is exactly what it was always going to be and evolution of the mk3, they have bought it up to date with a solid feature set, while keeping the whole thing open source (i find it funny how quickly the community seems to be shunning open source considering none of these printers would exist without it and yes that includes the Bambu printers) This looks like a solid printer, that takes us one step closer to one click 3d printing where you can set it and forget. And yes that means a focus on reliability and repeatability while maintaining quality over outright speed, so for many this printer will make a lot of sense.

[@jakabgipsz4788]

We don't need to understand what makes it expensive or cheap. I am the buyer and I am looking for the best value for money. The development of printing was indeed initially due to Prusa and that is why it is disappointing that it has fallen so far behind. There are now communities and printers that are ahead of it (Voron, Ratrig, EVA etc.) And Bambulab's innovation has also raised the bar considerably. It offers more at a lower cost. What I just click and print (it will never be that easy) Bambulab can do.

[@wardy89]

@@jakabgipsz4788 I completely disagree it’s really important to understand what makes a product expensive or cheap otherwise you can’t properly asses value as cheap doesn’t always equate to value. when I was talking about open source I wasn’t just referring to Prusa there were lots of others as well, and a lot of the innovations were only possible after patents held by stratasys expired, now we have all these companies ditching open source, patenting stuff and once again potentially hamstringing consumer 3d printing. I would also argue that they aren’t behind, the mk4 is right on par feature wise, I am sure they would like to have bought it to market earlier but that’s just the supply chain reality right now. Bamboo might offer more for less but right now it’s realisability is an unknown, as is it’s long term customer and product support. Another factor that has to be considered when assessing value.

[@Defyant123]

Did some one say Mendel

[@Defyant123]

@@wardy89 I completely disagree... I want the best and i want it now and if Joe cant give me that i'll go elsewhere regardless... I don't care if its creality tronxy voron ratrig, I don't care about open source. Cause Joes certainly milked it for all it's worth. He is fat and filthy rich thanks to open source. I don't buy a product from emotion or catchy jingles or false claims (and all the makers are doing it now not just Joe) I'm analytical clinical and decisive in my decision making I have no emotional tie to how or why a printer is made. I'm more than happy to toss it in a bin when i'm done and move onto the next best thing when it comes along...Even if it is a Prusa down the track.

[@jakabgipsz4788]

@@Defyant123 I agree with you. When I plan to make a purchase of this volume, I don't choose based on ideology, I look at value for money. I look at what I get for my money. If I didn't do that I would be damaging myself. Prusa printers have been overpriced devices from the beginning. The same machine if you put it together, you can build it for half the price. If Jozef doesn't pay attention to the market now, he'll be in trouble soon.

[@stelonous]

The MK4 was one of the fastest new-release products I've purchased. I had a feeling that this wasn't going to be a Mini launch and all the new features just solidified it for me. You can obviously tell the sheer amount of testing that went into a product.

[@ulaB]

And even if not, we'll get updates quickly… :)

[@ericlotze7724]

It seemed like they finally did a “mostly good to go on release” release (jynxing it now, and they don’t have the input shaper / advanced use of the loadcell data but anywho) which is refreshing.

[@MartinWolker]

At least the waiting for electrical components to be in sufficient supply for mass production was good for something. They had enough time to polish the MK4 and test it properly.

[@BenCos2018]

@@MartinWolker I think that's the main reason they were so long tbh

[@JonS]

Thomas can't help but tidy up the filament that's coming off the spool after he's been moving the head! That would be me too.

[@TrueThanny]

I expect anyone who's had a print fail due to a tangle after it's more than halfway done will develop such a habit.

[@JonS]

@@TrueThanny yes. For me it's an source of paranoia.

[@reinux]

Ended up going for a MK4 after months of mulling and even cancelling my Bambu preorder. No regrets. I love that it needs so little maintenance, and that when it does, I know I'm in good hands. Also, the kit felt like a tour through the minds of _really_ talented engineers. It was super fun.

[@jefffreeman7695]

I just received my MK4 and everything about it has been mind blowing. Well done, Prusa!

[@TheSolongsidekick]

Wow you really bought an upgraded Mendel in 2024? You aren't interested in bridges by chance, are you?

[@btcruiser]

I think Prusa is a great company that makes great 3D printers. I was fractions of a millimeter from purchasing an MK3 when I ultimately decided to go with an Voron 2.4 - not at all due to the printer's ability, but my desire to get a CoreXY system (an architectural choice as it were.) It is highly likely I will still get a Prusa printer for smaller print jobs in the future because it is just so reliable and easy to set up a print on. Great interview!

[@__K__B__]

There is no going back from a Voron and the price is right. If you want a second small printer I would go with an LDO 0.2 kit. It's cheaper and way better than this IMO.

[@goranjosic]

When you factor in that Prusa printers retain their good resale value much longer than the competition, Prusa definitely "pays for itself" (like the iPhone in the world of 3D printers, but if Apple were Open Source and if it genuinely cared about the needs of users 😅)

[@JamesElise160]

@@__K__B__ Yes and no. I have both (actually I have 2 Mk3's and a 2.4), and the Prusa's are a LOT more reliable. So, as I virtually always print for work, the Prusa's are normally my go to because I know they will work. That's not to say I don't love the 2.4, I do, and it's massively quicker once it gets going, but it does require a lot more tweaking.

[@Matthewjohnwilson]

both of my MK3s+ have over 365 days of total print time and they still power through my projects like a champ. Its really impressive how little maintenance it really needs with the amount I print. If thats an example of what Prusa can do, I am so excited to try one of the MK4 machines once I purchase one this coming year.

[@3dprintedman]

The Mk3 is one of the best purchases I have ever made. I am very happy to see Prusa continuing to innovate at roughly the same price point!

[@LilApe]

Which is? hope you don't say bambu lab, as they innovated nothing, just copied.

[@LilApe]

@@SkeeterPondRC lol prusa never innovated? Lmao he practically invented the i3 design which is the most copied printer style on the market. He also invented the heated bed, which hey, 100% of 3d printers use today. Also, segmented heat bed on the XL? How many printers have that? None, just the XL. Meanwhile here is Bambu lab ripping off every open source innovation, then slapping a proprietary label on it. Then contributing literally nothing to the open source that they steal from. Sit down and learn.

[@MarlinFirmware]

The new MK4 is looking like a great set of improvements. I hope to get close to one and give it a run some time! We just pushed new Cartesian fixed-time motion planning with advanced Input Shaping to Marlin bugfix-2.1.x - which includes resonance variance based on Z height. This implementation was contributed by Ulendo for the open source world to use freely, and Prusa Research is certainly welcome to adapt it to their own firmware, which is based on Marlin 1.1.x. The fixed-time motion planning system itself replaces Marlin's just-in-time motion planning, but allows for switching to either motion system with a G-code (M493). As a separate motion system it has its own Linear Pressure Advance as well. (Ulendo is most famous for Filtered B-Spline -FBS- but this is not included in their open source contribution.)

[@ahmetcemturan]

Can you explain the advantage of the fixed time motion system vs the jit motion system..

[@gmiles119]

I have a few 32 bit boards laying around, and now a MK3S+ that is seeing limited use. looking forward to putting it all together, while hopefully keeping my palette 2 pro compatible in connected mode.

[@ScottLahteine]

@@ahmetcemturan Presumably the stepper pulses will be more regular, whereas with JIT there may be some irregularity. In situ it's hard to notice the difference, but some have reported that Fixed-Time subjectively seems better. I think we'll need to put an oscilloscope on both of them and see for ourselves. I'm still on Team JIT, as it uses far fewer resources and works great on slower AVR boards, but we'll continue to improve Fixed-Time Motion and it may become the preferred choice for faster boards with lots of memory.

[@blakbuzzrd]

Thomas, just wanted to say how much I've appreciated your videos over the past year -- I purchased a Prusa MK3S+ as my first (and only) FDM printer last year, based partly on your abiding confidence in the printer (despite the many printers you have access to). I'm so glad I did. I enjoy your approach to providing rational analysis of these products, and measured recommendations where appropriate. This video was no different - you invited Prusa to engage on a variety of potentially uncomfortable questions. Keep it up!

[@Sportdue55]

I preordered the XL, but Bambu has blown me away so much now I have 4 P1Ps with AMSs and 1 X1C. It's the first time I felt like paying more than $200 for a printer was worth it due to the speed. I'm glad Bambu has pushed Prusa into making faster machines.

[@RYTHMICRIOT]

I started with an Ender 3v2 in March of this year. I did a handful of the common mods for it and it was really just an entry point to kind of grasp the process of modeling and printing my own parts. I bought the Bambu P1S last month and the degree of separation between the two in terms of speed and quality is gargantuan. I mention this because I had considered moving to a Prusa mk3, however the hard fact is that the "bed slinger" as a design concept is inferior to "core XY" in its basic premise. Moving the mass of a print bed will always be a setback. However, Bambu does not have the track record of Prusa, and I would likely recommend a Prusa to someone who was looking to make money with their prints.

[@Sportdue55]

@@RYTHMICRIOT I've used a 60 Ender/CR print farm in the past for selling and making money with prints. That has been completely replaced with 7 Bambu printers. I suggest them over Prusa.

[@jaylawvlogs264]

I’ve been a loyal Prusa supporter/ customer for over 8 years. 10- Mk s. Few minis. I really like the nextruder concept and some other features. 4 mo ago I purchased a X1 Carbon ( with AMS ) since then I replaced all of my Prusas with X1 Carbon s and P1P s. Surprisingly after literally thousands of hours in total I’ve had zero issues that were the printers fault. The ams system works great ( you have to learn what spools / adapters work and don’t work). A couple years ago I bought an mmu2 and I could never get it working properly. Prusa says that they’ve put tons of testing into the mk4 , and I believe them because they have the man power and resources to do so. My only concern is I hope new printer was not rushed to market . To compete with the obvious Bambu Labs market. I’m a little disappointed it looks so similar to the mk3 , with not enclosure and no multi media. Speed is a big deal to me ,as long as the resolution of the print is not effected. The Bambu lab P1p and X1 both perform to another level. I understand the whole open source Prusa promotes and I get it , but there are quite a few aftermarket Bambu parts already to market. Im still rooting for Prusa, they are a great company. I think they relied on brand recognition until another company released a printer that blew there’s away. The XL was a interesting concept I’m assuming more geared towards industrial use due to the pricing . The long long long wait time turned many customers away. I’m hoping this works out.

[@Defyant123]

I'm still rooting for Prusa too ppl obviously are very emotionally attached to them.... It's just not here to compete with the X1C, hell not even the P1P , you don't bring a pickle to a knife fight. It's solely here to compete with the Mk3 and that's exactly what it does and wins!

[@yycfoamwars6557]

They use the same bed. The mk3 and mk4 So ya Bambu gets my money

[@Flashy_DE]

regarding this open Source thing.. the MK4 is not open source. Prusa don't want go to the gpl open Source license anymore....

[@jonathancasagrande6774]

@@Flashy_DE That's a false statement. People want nice, fast, closed source systems, untill they break.......see Apple for example

[@you_just]

appreciate how tom doesn’t throw prusa softball questions but is willing to disagree with him and question his decisions

[@Defyant123]

like when he said it's been tested for "millions" of hours and tom just lost eye contact and looked down........

[@pauserratgutierrez]

Wow, I really appreciate the efforts you put in the video and the editing! Looks cool!! Keep up with all the good work Thomas!!! Wish you the best!!

[@mrkthmn]

Im only about 9 minutes in but I really appreciate how he openly acknowledges that sure, they may not be on the cutting edge of 3D innovation but thats not their focus. They're trying to make a printer that *works*. I really appreciate that. I think the innovation is cool but I'm not at the point in my life where i want to be messing around in uncharted waters just to have "the best." I just want a printer that I can start and walk away from without a knot in my stomach. So far my MK3s+ has been that for me. My neighbor loves to talk about how he saved $600 more dollars that I did and his printer can print the same stuff mine can. But he's constantly down and his prints suck cause he doesnt want to put in all the work to get his printer... working. I've never experienced that.

[@52thephotoshop]

I mean bambulab is both features and reliability. But I am so glad that there's finally some competition from prusa.

[@Neo1983m]

@@52thephotoshop I think you should take the statement that bambu is reliable with a grain of salt. This can only be said when the Bambu has been on the market for 1.5 - 2 years. Because if something works for the first few months, it doesn't mean that it will always work. Besides, I have heard of the exact opposite as far as that is concerned. You can be lucky and the Bambu works or you can just have problems and difficulties. The spread of quality is way too high. With Prusa, it is always consistently high as usual. That's what I appreciate and love about Prusa. And strangely enough, you Bambu owners always let out the same envy.

[@scotthancock8225]

Why not both? Other manufactures are crushing that, this still feels likes 2016 tech

[@scotthancock8225]

@@Neo1983m I have multiple X1 and P1P's Bambu are far more established and reliable company then Prusa ever was at this point int here existence. There are already 3rd party parts. The argument that Bambu hasn't been around long enough really is no longer valid. They are not going anywhere soon

[@NigelTolley]

@@scotthancock8225 what utter nonsense.

[@SierraGolfNiner]

Really great interview. Answered some questions I had that didn't seem to be clear in any of the published media to date. Personally, I'm a fan of Prusa's focus on a solid workhorse of a printer, so I'm glad they are sticking with that and not trying to get too crazy. Placed my Mk4 order after finishing this video.

[@neurojitsu]

Great to hear from Prusa direct what their thinking is about their printers and their value proposition. I'm new to the 3D printing scene, looking for my first printer. I'm seriously considering a Mk4, having gone full circle from thinking of getting a Prusa Mini Plus to looking at the Bambu Labs P1P and being seduced by their speed and value for a core xy machine (but not their cloud-based print servers, nor their fast growth-related production and customer service problems). I've come round to valuing the reliability that Josef Prusa spoke about as worth paying for. HOWEVER, it would be nice if the doubled productivity they expect from their print farm was passed on to customers in the form of lower prices... I seriously worry that their prices are becoming uncompetitive in the face of the new core xy machines coming out now - and especially Bambu seems a real threat to their long term core Prusa market. Personally, I've decided that quality, sustainable manufacturing and open source development and transparency are all things that I value and so I should put my money where my mouth is. But not everyone can afford that, and therein lies the danger for Prusa.

[@zerofox3d]

The comments are so toxic these days. So much hate. Such a lack of respect. People obsessed with this tribal “mine is better than yours” attitude. Enjoy your printer whatever it is, let everyone else enjoy whatever printer they enjoy. Keep your negative hate to yourself, it contributes nothing to the community.

[@anonony9081]

Yep. The number of people I saw just outright saying this printer is shit because it's a "bed slinger" is astounding. Is it possible that different people have different needs ? And not everyone needs their printer to be the fastest on the market? We should all be happy that prusa, an amazing company is still bringing us new models and if it happens to not suit your needs then get something else. Who cares?! Also it's the mk4, if it wasn't a "bed slinger" then it would not be called the mk4 it would be a different model. People are so quick to shit on everything these days

[@paulmilne3038]

I have to agree the comments are not toxic a lot of people are unhappy with the lack of innovation on the printer and it’s still the same price. At best it’s disappointing.

[@Tottorul]

@@paulmilne3038 where is the lack of innovation? its got great upgrades. what other company sells something of same quality at similar price? only bambu... the crybabies really saying "but i can get a creality whatever and spend 50 hours on upgrading and testing for a couple hundred bucks less", id rather save time... prusa is still top 1-3 options for the price, so i dont see the problem, I just see s lot of people with buyers remorse defending their endless tinkering

[@paulmilne3038]

It’s got a few nice upgrades but nothing dramatic, and nothing I consider a great improvement. You may disagree but if they want me to spend £500 upgrading my Prusa I expect more. It’s a lot of money. It’s not a difference of £100 here it’s a difference by a factor of 3. Yes you don’t get much if any support from the likes of sovol, creality, and all the others and you do get that from Prusa but is it worth 3 times the price. For people running print farm’s perhaps if that’s your business but for home users not so much in my opinion. You can disagree, opinions differ its just I do not see a great difference and for me it’s too expensive.

[@Tottorul]

@@paulmilne3038 even more so for home users. they will never bother to upgrade and dial in a 300 dollar creality. get a 400 or 1000 dollar mini or mk4 and then its just print away. doesnt the mk4 print 2-3 times faster than the mk3? thats such a huge upgrade in terms of how much you can print and also will do a lot to the the energy costs here in europe. there is no single other option to the mini, mk3, mk4 and bambu for the home user who doesnt want to waste their time. any other model is a lottery, im not here to plat the lottery but to prinr. and yes the upgrades and tinkering truly is a waste of time

[@ScytheNoire]

I got excited about the new MK4, but then I have a modified MK3S+ with a Revo hot end, and I'm not sure I would want to give it up, it's such a great design. And if I'm going to end up dropping more than $1K on a new FDM printer, I would want to go larger size and Core XY, like the XL or Voron. Although Prusa seems to have been having trouble getting the XL to market and fulfilling orders, backlogged until the end of the year. So I'll wait, let the early adopters work through the kinks.

[@Nardypants]

I guess a MK4 has so much less parts to source and is much simpler overall. That has to be a big part of why.

[@Lizard008]

I really like how these guys approach the interview: They know what their machine(s) can do, even though it's (they're) in a higher price bracket than most of the competition. They've got a bunch of improvements, stability, reliability and QC going that they don't even bother bringing up... Just because they take it for granted. They have this thing of "ask me anything, and I will give a straight answer on the fly because I'm soaked through and through with knowledge about these devices. I don't need no prep or scripting" That kind of attitude / mentality speaks volumes!

[@johnc_]

This new levelling should also allow you to easily print on tulle, cotton and other niche materials

[@morbus5726]

i would think that cotton might squish a bit and throw off the probe

[@AmixLiark]

​@morbus from what I've seen, the load cells are so sensitive they don't even touch the bed. That was in one of the videos.

[@radry100]

No, since those materials are squishy and there doesn't seem to be a way to calibrate the load sensor?

[@morbus5726]

@@AmixLiark that doesn't make sense... How does a sensor that measure force activate before force is applied?

[@AmixLiark]

@@morbus5726 air pressure

[@extectic]

I like it. I mean, no more Z level adjusting, the printer does it. Speed much more than doubled, potentially. If I hadn't already gotten a Revo, the nozzle system would probably wow me more, but it's a nice system utilizing the older style part. Still need tools, but not a lot of them, so that's progress. The drive gear etc looks great and super reliable. Motors are more precise, so prints should be smoother. All in all, a great evolution of the MK3. Probably the best printer on the market if all you want is a machine that will work when you get it home and reliably print you whatever you tell it to print, without any modifications required.

[@ScytheNoire]

Ya, once you get a Revo, it's hard to go back to anything that requires tools and more than a few seconds to change a nozzle. And once they come out with the Revo ObXidian, it will be even harder. (pun not intended)

[@Neo1983m]

@@ScytheNoire But the Revo has a hugh problem with the thermistors. From smoking hotends to burning extruders, we've seen it all. And the whole thing seems to be a design problem. I don't want my hotend to always the printer shows at least a 10 degree difference from reality.

[@teguh.hofstee]

@@ScytheNoire You can already order the ObXidian Revo though I thought? Shouldn't they be shipping soon?

[@DeKempster]

Made in EU is a no-brainer. Less dependency from China is good

[@Rick-vm8bl]

True but a lot of the components (mostly electrical and metal) still come from there as its realistically the only place you can get some of it.

[@ShrimpyMaster]

At best most parts are tested in EU.

[@MauricioHernandez-de8is]

XD the parts are not Made in europe, do not be naive

[@arbjful]

@Broski Snowski the motors are from Trinamic, we use this a lot in our automation products. They have excellent performance and features, I dont think there is an equivalent Chinese make for this motor

[@Defyant123]

@Buzás András So tru.... Go team blue! lets go branden!

[@flashforum939]

Absolutely appreciate having a solid workhorse over a speed daemon - thanks for not going down the path of competing on speed as the most important selling point...

[@JohnOCFII]

Thanks for hopping in your car to quickly get us this quick look into the MK4! Much appreciated.

[@dariussteele3843]

I'm a Bambu carbon x1 owner who has never owned a Prusa. I am very content with my purchase, but now that I have watched this video, I have a profound respect for the mark 4. I think this is a very remarkable printer, that I will seriously consider.

[@genericcommenter1148]

I'm very interested to see what the input shaper can do for print quality. Pretty much the only gripes I have with my mk3 in terms of print quality is the occasional messy first layer and the slight ghosting on parts. Looks like the mk4 addresses both, so looks like it's time to grow another kidney.

[@jaredf6205]

You going to upgrade or go for a new one? A new one is only US$220 more than a full 4 upgrade(which you’d need to get the new motors) but then you don’t have your old printer after. I think it’s worth it to spend a bit extra and not have to get rid of your old printer.

[@genericcommenter1148]

@@jaredf6205 I'm planning to get a new one, but that's at least a couple month away. I want to make my own little print on demand business, so multiple printers is the way to go anyway in that regard.

[@pauserratgutierrez]

​@@genericcommenter1148 Wait some months, it will be cheaper (kit)

[@Neo1983m]

@@pauserratgutierrez No. It wont be cheaper. Thats prusa. It will only get cheaper when the Mk5 comes out

[@pauserratgutierrez]

@@Neo1983m I meant that the kit is cheaper because you assemble it, compared to the built version. Price won't change until a new machine is announced, as you already said!

[@joku5150]

Excellent questions! I really appreciate everyone involved in the interviews taking the time to give such excellent answers and descriptions of the new Mk.4! Very well done =-D

[@christiantrab6160]

By accident I used a Prusa MK4 profile for a print on my Artillery Genius printer, because I wanted to try the Prusa slicer, instead of Cura. It reduced print time more than 1/3 with same layer height and infill, and the print came out fine. At the second print I realized that I was using the wrong profile, but I tried again with good result. So - Prusa MK4 profiles makes quick and good print on Artillery Genius 🙂

[@thaphreak]

Finally, a Prusa I'm interested in.

[@maxmusterman6030]

I will buy one, I had a cheap 3d printer, put tons of work in it, a new Duet Board included, but the amount of work needed to come close to a Prusa is huge... Was a huge mistake to cheap out in the first place, I won't make that mistake again lol

[@gazzas123]

My MK3s is now 3 years old and working well. 5.942Km of fill I do thank Prusa for producing such a reliable printer. I would also thank Tom for his reviews.

[@Spartacusse]

I love when Prusa innovates, because we, the other 85% who don't live in first world countries eventually get better parts for our "normal" printers that didn't cost 1 year's worth minimum wage, like a Prusa does.

[@Defyant123]

I'm not sure what they actually innovated part wise... but i sympathise with you not being in a 1st world country.... Maybe Joe should donate all the old mk3 printers when he upgrades them to Mk4 ... that would really show what a cool guy he really is :D

[@roamingthings]

Thank you for the great interview. It's nice to see how carefully and responsible Prusa develops its products.

[@roamingthings]

And I would add: with excitement but unexcited

[@scottr4086]

Thanks for the video Thomas. Will you be doing an indepth review in the future?

[@MadeWithLayers]

Looks like there's quite some interest, so, yes, probably!

[@mvadu]

​@@MadeWithLayers did you bring one home with you on your drive back? 🤔

[@DJHannu]

For a second, I thought it was an April Fool’s joke. I generally don’t trust any video that comes out on April 1st. 😊

[@rabidralph]

I like that he is more focused on the reliability and quality of the printer rather than the speed

[@BretWrightSTUFF]

Exactly, speed is not always a good thing

[@gmiles119]

Had my Mk3S+ for 5 years, and it prints great, very slowly. My life became much better when I threw my MMU2 in the trash and paired it with a Mosaic Palette 2S Pro. With a well tuned extruder, this is a match made in 3D heaven. As an engineer myself, I wouldn't be able to sleep at night knowing my name was on such a piece of junk as the MMU2. Couldn't hold out any longer, and got a Bambu Labs P1P. This thing is amazing. Light years ahead of anything else out there. Prusa obviously did not see this coming, and it shows. The one thing I never had an issue with was first layer consistency. They have doubled down on that, and for whatever reason have chosen to stay with outdated Mendel technology, outdated motor drivers, and an unacceptably small build volume. Their cult following will keep them afloat, and I honestly hope they are able to fulfill the promises of the XL. I have a business to run, so can't afford to waste resources on outdated technology, but will be watching to see how this unwinds. Will be an interesting year for sure.

[@mturnali]

Nice restomod. Its a big freaking achievement for them. I guess, we'll still see the same machine after even 10 years

[@Defyant123]

It is a big achievement and Joe is very very proud of himself, you can see it in his body language. The confidence he uses while throwing the "millions" of hours testing statement and seeing Toms eye contact hit the deck was all very confidence and trust inspiring.

Thank you Thomas! Now I'm waiting for is your in depth review, especially if you could compare it to the Bambu printers. It's actually not a bad upgrade feature set overall. The problem is that it's very close in pricing to the Bambu printers which offer an enclosure, all metal parts, the lidar based auto calibration, and some more. What makes me still consider the Prusa is the sound difference and the better part compatibility. The Bambu seems very loud to be used in an apartment, though it finishes much quicker that's true. Also I wonder if they managed to stabilize the MMU3, because if it's not much better than MMU2 then the Bambu AMS is ahead again this regard. I'm thinking about moving forward from my MK3S around the end of the year so I'm really interested in what the long term usage will show.

[@carlosjosejimenezbermudez9255]

MK4 is also open source and has a history of good support and QC.

[@JohnSmith-rt5yq]

​@@carlosjosejimenezbermudez9255 well, the MK4 is new and doesn't have much history yet, you mean prusa I would guess? And that may be true, but Bambu has done what no one else was doing for 3dprinting... So much so, that this Mk4 came out of no where to compete

[@corncranker]

+1

[@WhatsMikeUpTo]

Also not to mention sustainability and fair manufacturing labor!😊

[@parserthelynx]

​@JohnSmith-rt5yq You mean how their DJI engineers pulled from Voron engineers and new buyers called it "innovation"? And ECRF is still miles ahead of AMS and the MMU systems. And actually, it does multi-material better than AMS, which is still only adept at color change. Bambu only made a closed-off Voron you don't have to build. There's nothing new there. CoreXY had been a thing since before M3D. And M3D is a dumpster fire.

[@Ender_Wiggin]

The juxtaposition of this video vs the review video is just bliss. I can't wait for the XL review. I am sure it will be juicy. If he ever gets one.

[@EngineerNick]

I have a lot of respect for the goal of reliability over max performance. I hope one day to own a 3d printer which is as boring to use as my regular paper+ink printer.

[@Validole]

As if the paper+ink printers weren''t the most unreliable things you can attach to a computer :)

[@EngineerNick]

@@Validole Hahaha you are right. Maybe I should have said 'laser printer'. The one I have has been smashing out prints without fault for over a decade. Maybe i got lucky.

[@EJTechandDIY]

The deal breaker for me is the price, 1200 euro is way to much.

[@_Piers_]

It's €889 if you buy the kit.

[@JJFX-]

lol what?! They can't be serious...

[@arbjful]

Was just to close the deal on a MK3 but I think I will wait a month or two then go for the MK4, this will be my first 3D printer

[@robertmorey4104]

Wow their own SMT line! I'm impressed! Nothing helps supply chain issues like having you own board line! I'm a Prusa supporter for life. The Mk4 looks impressive. I love my Mk3 and prusaslicer. Great work guys! Using your own printers to make and test your printers is a great strategy.

[@Neo1983m]

6:37 As for input shaping, I'm extremely skeptical and it seems to me that they put that in on short notice. Unfortunately, you can't calibrate input shaping in general, as you want people to know in the video, because it varies from printer to printer, depends on the current belt tension and the location of the printer. Especially since the mass of the Y-axis changes constantly with a bed slinger. And because Prusa doesn't send an acceleration sensor with the printer, it unfortunately makes the impression that they only decided to include it shortly before the release. I would be glad if someone could explain to me exactly how Prusa wants to implement this with Input Shaping.

[@twanheijkoop6753]

I think there is a connector for a accelerometer on the board. My guess is that it will come with a default profile and the option to recalibrate yourself with a accelerometer sold separately.

[@bastienx8]

The variation from one printer to another should be close to zero if you don't change the moving parts. The belt tension can vary but the printer can estimate it by measuring the current passing in the motors, this is already on the MK3. So I imagine that the input shaping can be tuned automatically with these values. And there is an accelerometer port on the bord for advanced users to calibrate more precisely their printers

[@Neo1983m]

@@twanheijkoop6753 I hope so. Yes, there is an accelerator connector on the board. But why they dont give one with the printer or dont assemble one in the Hotend like the XL? In my opinion, Input Shaper was an very late decision.

[@Neo1983m]

@@bastienx8 But the belt tension is not the only thing. The Place where the printer stands, the feets and underground and some more things. It all makes a huge difference. I think the port is only there because its the same port as the XL has. And the XL has an accelerator on the hotend. You just need to ask experienced users who know about input shaping. They will all tell you the same thing, namely that it has to be adjusted individually for each printer.Nevertheless I am looking forward to my MK4 🥰

[@Defyant123]

@@bastienx8" Advanced users" LOL 👍

[@jakabgipsz4788]

What few people think about: this type of kinematics (bedslinger) is not suitable for really fast printing. The bed gets heavier as the printing progresses and therefore the basic frequency changes because of the changed mass, which the input shaping cannot follow because it is fixed. Besides, moving tall but thin objects quickly can easily detach them and you can only print them slowly. This is why core XY kinematics is spreading. There the print head is always the same mass and the table doesn't move sideways, it just moves slowly (in Voron 2.4 it's completely fixed and it's the best). It is now an obsolete printer and expensive. Only those who have an even older Prusa printer admire it, it is better than that, but it is not enough...

[@jacobbobo4670]

I just want to say I have also had audio issues on large projects and I appreciate how much work it would have taken to mix this

[@jordini321]

Wish we could get a video like this for the Prusa XL...

[@richardrousseau387]

Would really have liked a little explanation around the accelerometer, and not having it as part of the extruder... Any reason for that? Thanks for a great video, Thomas! I've been a Prusa user from the MK2 days, and have a MK3S+ at the moment. Just ordered the MK4 today.... Can't wait!

[@chrisgeeraerts5868]

Glad you provided real information about the MK4 instead of the (PDT) speculations but I wanted more information about the MMU3 ... I stopped using MMU2 not because it was unreliable but it was to loud in my studio appartement so I am looking forward to any review of that and if it is as silent as the printer

[@botcherbutcher7608]

Same here, for me there was a reliability aspect as well though as the blades kept misaligning and sometimes I would need 4 or 5 cycles to load, which is a little much imo BC, as you know, MMU2s homing is LOUD :) looking forward to the new kit and for about 100€ it's an alright upgrade and I hope prusa adds the feature to either select the colours on print start or confirm the slicer selection. :)

[@Defyant123]

What?????? unreliable from Joe Prusa!!!!..... WTF! i don't believe you ! it must have been some thing you were doing wrong, Lets get Tom to ask Joe i'm sure he will sort this out next time he chats with him :)

[@theproceedings4050]

I appreciate that Prusa knows their customer base. People who buy their stuff want reliable machines that function perfectly, with nice features. It's a premium machine, and it's not my thing, but if I needed my machines to work 24/7 and not have to repair them very much I would definitely go with Prusa. I'm an ender 3 upgrading troglodyte though. I like the spicy upgrades.

[@C4mpblor]

Cracking video as always Tom. Cemented my desire to buy one (assembled so I have zero issues) and sell my MK3S on.

[@MMuraseofSandvich]

I appreciate that the new heater block design takes a page from the E3D Volcano. Hot-tightening the old V6 _and_ worrying about where to grasp the 200+ degree heater block so I don't break wires was not fun, and it's why I ended up with a leaky block and later an upgrade to a Revo hotend. It would be super nice if either Prusa or E3D come up with an adapter to Revo nozzle-breaks and hotends, but given the different location and size of the threads, I would be fine with just using the stock system and the V6 adapter. As someone who has 3 printers with touchscreens... PLEASE DO NOT USE A TOUCH SCREEN. If there's expansion capability for the mainboard, might I suggest things like a camera input and a few headers for things like LEDs? Even though a couple of the printers in the office are cloud-only, I kinda want to see a Prusa solution where you install the management software for Prusa Connect on a server in the office, then that manages the printer fleet connected on the LAN. This is one of those situations where Prusa can charge some serious money, I'm thinking that if you're running an active print farm, you probably have the money to invest in something that will save time and manpower.

[@NiSE_Rafter]

I don't mind touch screens if they keep a knob. Hybrid gives convenience of both.

[@xIsouLcruSHca]

Whats the bad thing with touch screens?

[@janvesely1938]

That new display looks nice. But can it run Doom?

[@Neo1983m]

The right question is, "Can it Run Crisis" ^^

[@manarallego3745]

Since my old 2007 mp3 player could run Doom, I'm cautiously gonna lean toward "Eyup!".

[@jacobrollins37]

I can understand why people would think it would be better for Prusa to not 3D print the parts for there printers but I can see for there research and development it will help Prusa in the long run make better 3D printers.

[@Defyant123]

3D printed parts are the best just ask Voron and Ratrig owners.

[@paulhamacher773]

Can't wait until the Kit is finally available 😃

[@KennethScharf]

There HAS to be a limiting speed for 'bed slinger' type printers that have to move a heavy print object on the bed. For small parts, these speed up technologies are great, but for larger objects, no "i3" style 'bed slinger' will ever print as fast as a 'core -xy' style printer with the bed only moving in the Z direction.

[@Defyant123]

That's why the whole input shaping thing is a bit of a farce..... input shaped from the factory once and that's it. Still trying to get my head around the "millions" of hours of testing.................

[@Neo1983m]

The Prusa has never been about speed but always about reliability. Please understand that. Look at the new video from CNC-Kitchen about the speed of the Bambu. There it is well clear that too fast printing makes the parts weaker and the quality suffers enormously. Yes, even with the Bambu.

[@KennethScharf]

@@Neo1983m No argument there! However Prusa did claim BOTH increased reliability and speed with this new model. All I'm saying is that they may have reached the limit of speed improvement with their 'I3' style printers, but no doubt will continue to improve their reliability. Still, if you need faster prints, you may have to run more printers in parallel rather than get faster printers. Which is why I still maintain that LARGE SCALE production should abandon 3D printing and use injection molded parts. Where that crossover point in scale is, depends on what you are making.

[@JoseAguiloworkshops]

​@@Neo1983m and a voron too

[@NigelTolley]

@@Defyant123 100 machines running for a thousand hours each is 100,000 hours of testing time. 1,000,000 is well within reach.

[@JordiSanchezF]

Respect to all Prusa fans, even if they are fanboys. I am simply making comparisons between various brands and I would like to point out that many of you are focused on just one, Bambu LAB. I have a simple observation: if you purchase a Sovol 06 for $200 and add a high-quality extruder for $150 and a Bigtreetech bed for almost $500, you will have a printer that is better than the MK4 and with the same form factor.

[@ivyr336]

So $850? As in more than the mk4 kit?

[@deathsriddle6121]

I believe the new hotend is the way to go. I love that Prusa has made it so that standard V6 nozzles can still be used. This keeps the maintenance cost down. To me this is something that the Revo has missed the mark on.

[@goranjosic]

Best 3D printer company ever!! At lest when we look at consumer 3D printers, they cannot compete with professional machines that cost 5 thousand or more euros, but in the class of acceptable prices, Prusa is an invincible king! ❤

[@AverageHouseHusband]

I see the price, not seeing the value....

[@RafiLerman]

After losing my MK3 in a move a few years ago, I’m looking forward to rejoining the Prusa family when the Mk4 kits start shipping

[@McTroyd]

Wow, was that ever an info-dense episode! Thanks Tom. Would love to get my hands on a Prusa at some point.

[@MrMobius2011]

Great video, I would love to see a review comparing it to the Bambu labs x1 as both look to offer great quality but doing it different ways

[@LordCreo]

This I was very excited for the MK4, but it feels like it's launching 2 years too late, the Bambu tech feels way ahead, I was holding out for the MK4 and anticipated hitting the buy button straight away, but I'm genuinely thinking of going Bambu instead now I've seen it.

[@frederickdouglass7140]

​@@LordCreo5 years

[@mrfoameruk]

Seems this is Prusa pushing out something to compete with the Bambu carbon. But the Bambu still wins overall. Bigger area, enclosure, multi-material, accelerometer built in,faster. You can get these on prusa (and some will be "coming soon" like the multi-material), but it would end up costing more with less functionality. I still holding off till the carbon 2 comes out to fix any problems that so far as I can see are few. And it will be cheaper hopefully. I guess it's good it has been introduced as everyone else has to up their game or reduce their prices.

[@LordCreo]

@@mrfoameruk not to mention there’s a ton of extra functionality in the Bambu the the MK4!

[@VorpalGun]

I'm tempted to upgrade my mk3s to a 3.9. The extra speed would be nice. Probably going to wait a while, see how the whole high flow nozzle situation turns out.

[@midiwerks5450]

I'm tempted to just use that money toward a MK4 kit and also keep my MK3S+. Maybe upgrade the 3 later on.

[@Swarm509]

Actually quite interested in the mk3 to mk4 upgrade path. I own two Prusa MK3 printers (A launch MK3 upgraded to S+ and a purchased MK3S+ years later) and they are going strong, but funny enough I find my MK3S+ I bought doesn't print as well as I want (weird artifacts when the printer gets near the top of the print Z range). Rather then selling it and buying a new printer the MK4 upgrade may be perfect for it, and really not too expensive for what one gets as I was thinking most of the replaced parts are causing the issue. I can save the parts for my original MK3 (which is a rock solid workhorse) and experiment with my second one, but also staying in the Prusa ecosystem.

[@boazjoe1]

I am stoked to see everyone's experience with this.

[@spikekent]

The MK 4 looks awesome, seriously thinking I might replace my faithful MK2 with one. Great video Tom 👍

[@jakabgipsz4788]

Much cheaper is a Bambulab P1P.

[@alexanderlumsden7223]

@@jakabgipsz4788 it's not about price

[@SB-100]

@@jakabgipsz4788 yes, because it is made in China and not Europe.

[@spikekent]

@@jakabgipsz4788 Very true. But I love the whole Prusa experience, open source, customer support and the continuous upgrades and innovations, to name just a few. Just my personal preference.

[@jakabgipsz4788]

@@SB-100 Assembled in EU, but all parts is made in china...

[@billstech1715]

Already ordered one. If you look into the speed of some of the machines that are claiming more speed, the part quality is not there. Excited to see this new machine in action.

[@jakabgipsz4788]

Much cheaper is a Bambulab P1P.

[@jeffhaas9577]

Much louder, too!

[@LordCreo]

@@jakabgipsz4788 Heck for basically the same price you can get the Bambu X1C.

[@Defyant123]

@@jeffhaas9577 Actually speed for speed it's not and considering the mk4 only has a 4010 cooling fan you might wanna consider a louder 5010.....

[@Adnub]

Nice, video. But the real question I have right now is where I can find the model of that bird in the bottom left corner at 29:06. REALLY want to print that one now.

[@AShuayto]

I'm very against brand loyalty but in Prusa's case i've had such a good experience with their support that it's hard to consider anything else.

[@hawtdayum]

Just remember. Prusa has been in the printing game for 11 yrs and this is the best they can do in 2023 when the competition not only under cut them in price but crushed them in features. Sovol SV06+ is 3rd the cost and open source(larger bed, similar speeds and with a sonic pad gets even more features) Bambu is similar price but waaay more value for the feature set(too many to list) flsun V400 is faster with larger build volume This is the best the could come up with. The emperor has no clothes. You all are too afraid to say anything.

[@overknight5226]

Why this over a p1p? Just being honest here. I see no advantage over the MK4

[@HReality]

Personal opinion.. own a MK3S+ and it’s one of my goto printers. Kind of opposed to an ‘upgrade’ so I’d have parts laying about so more than likely I’d shoot for a full kit. That being said at the end of the day it will always come down to availability. Don’t want to wait 2 months to two years for something I am needing for projects

[@Defyant123]

3 day turnaround for a X1C !

[@JulienTJ]

Great interview! I appreciate that you don't just ask the questions that could be answered in the article. Like the #602 one :D

[@Aikano9]

This upgrade was desperately needed. The MK3 was rather outdated and overpriced in the current market. The MK4 is now far closer in terms of value proposition to the Bambu printers than most other printers on the market except maybe a Voron. Hopefully the MMU3 is just as good and reliable as the AMS. Competition is great, there are a bunch of new cool features, some of which I also wish that my X1CC had like for example the auto loading of filament, though when I reached out to Bambu a few questions, some related to such a feature a few months ago, they informed me that they were working on a similar feature. If I were to get a third printer (also have a broken E3V2Neo), choosing between the the P1P, MK4 and X1C(C) would be much harder, though I think I’d probably go with another X1CC or a P1P if I wanted to save some money. I think the X1C(C) and P1P still win in terms of bang for your buck, unless you very very highly value open source, and complete user serviceability, modifications, and upgradability with first party components and instructions. If it is truly as silent as shown in the showcase video then that is very impressive, the bambu printers are LOUD

[@MaxMichel89]

I think that in the longer run, the servicabilty and User mods etc. Make the MK4 a better value or Bring IT down to a similiar value to Bamboos.

[@maplobats]

Indeed the Bambu printers look sweet, but not being open source makes it a hard no from me. Also, for me, tinkering and modifying are the best parts of the hobby, so a Voron kit is more suitable (for me) at that price.

[@Defyant123]

@Broski Snowski exactly.👍

[@Defyant123]

But isnt the mk4 running a single 4010 part cooling fan?

[@MrTidus1492]

I think it's still about twice the price that it should be given where the P1P and X1C sit.

[@TheGlitchyCorgi]

Sounds like they've made a lot of improvements but.... that's the same price as the X1C and looks like a lot less printer for the money. Not gonna beat'em up to bad as this was likely in development long before the Bambu Labs printers were out, but the older printer companies have really got to step up their game.

[@jakabgipsz4788]

Or undercut Bambulab in price.

[@LordCreo]

This! I'd been holding out for a Mk4, but it feels a year or more too late, the Bambu X1C has a lot more functionality for the same price (less if you consider the enclosure etc)

[@fabis9734]

Now that i know that Bambu's prices are without VAT i am definitely going to order a MK4 Kit! - Between the Kit and the P1P is nearly no price difference and the MMU is a bit cheaper then Bambu's AMS, thus together the price is nearly the same. The only downside is the missing Filament enclosure but thats fine for me.

[@fabis9734]

@@dggcreations In my case the P1P costs 659€ without Vat (im Germany). Adding the 19% Vat and 10€ shipping I have to pay about 800€. Prusa includes all those things directly but it's still 880€ for the kit. So 80€ more expensive. For me the difference is low enough that I would buy a Mk4 Kit. But a other competitor joined the game recently. It's Creality with the K1 which costs 659€ including Vat and shipping. Therefore I think i am going to wait until May when the first people can try the K1 out. If the K1 is good I think I am going to safe the 220€ and by that printer. But we will see

[@Yimir11]

Great video! Thanks for traveling and getting some questions answered!

[@leftblank]

I couldn’t tell where prusa would go as far as improving the mk3s but these changes look really amazing. I was already very happy with my printer. On another note. What went wrong with the audio in this video? Lots of strange cuts and noise

[@TheManfet]

I think the cuts were all while Josef Prusa was talking and I am pretty sure it was the beard's fault.

[@MadeWithLayers]

Sorry for that, too much beard noise needed a lot of reworking. My fault.

[@MrTidus1492]

I'll stick with Bambu Lab in the print farm for now, but at least Prusa is finally innovating!

[@Defyant123]

Their not.... it's all pretty much copied from a hardware stand point. The software and firmware is a different story. "Innovation is the practical implementation of ideas that result in the introduction of new goods"

[@MNanme1z4xs]

Prusa MKS series is the industry reference system, a must have for any 3D addict. It’s a great machine where every thing just works yet still something to tinker with. Prusa to 3D is Nintendo to gaming and Lego to toys.

[@ronniet906]

Top class technical analysis Thomas. You made my mind up to upgrade to the MK4 👍

[@shenqiangshou]

1:15 Oh my... so this is exactly the issue I was thinking about, since I don't see a wiper like on the Bambu, I was wondering how it was going to clean the nozzle tip prior to using it for probing. And now we see it, dripping filament as it tries to probe the bed. That can't be very accurate, right?

[@Mike01Hu]

It does a small wipe action as it reaches the bed, so spreading any small amount of ooze before measuring; it also repeats probing at that point if it senses an anomoly until it gets a stable result. A slight retraction may occur to reduce hotend pressure too, but that was not mentioned in the release video.

[@shenqiangshou]

@@Mike01Hu I guess given the backwards compatibility (in order for ease of upgradability) requirements for this printer made it hard to solve this in a new way. I tried adding a scrub brush idea from some models off printables, but never really got it to work. We will have to see how well this works in reality. Especially when you end up using stringy/drippy filaments like PETG.

[@Mike01Hu]

@shenqiangshou I have used both brush and blade wipers, without great improvements being achieved. With them, I found more issues of filament accumulation around the nozzle and wear of the full-nozzle silicon socks. I use PETG most of the time, with minor excursions to XT-CF20 (Amphora based) and ASA. Most of my PETG printing is with transparent filament to avoid changes in structural integrity due to colour fillers.

[@WoLpH]

32:56 I believe that a substantial amount of users HAS an MMU. Seeing how reliable the thing is and what a hassle it can be I doubt that so many people are practically using it. While the MK3S has been quite reliable for me (except for the LCD display being unreadable due to discoloring), the MMU has never worked reliably. It's a great idea but it the implementation is very poor... I hope the MMU3 makes it much better because it's not even close to the quality of the MK3S

[@barrag3463]

From my experience the new filament sensor on the Extruder should finally fix things. For me, working with 3 different machines and 3 different MMU2s, there are 3 (to 4) consisten failure point to them, 2 (and the fourth one) being easily fixable. 1) Point one was the selector sensor- sometimes strings of filament could jam the ball bearing. This could be fixed theoretically through better ram settings and sensor calibration but the permanent fix is just printing a new selector with a 2mm magnet slot below the filament path. 2) Point two was the tube, which in it's default form had too tight of an ID, resulting in some ball-ends being too difficult for the motor to extract when unloading. This is fixed with a 2mm ID PTFE tube, as slop in the tube isn't really an issue on an MMU2 as the Prusa is still direct drive. 3) the Third point was the unfixable one, which was the IR filament sensor in that stupid chimney. It needs recalibration basically after every other print as the chimney is eventually flexed out of position by the bowden tube, being secured by only a single screw, and it almost always would do this sometime into the print when you would be off doing something else. Since the Mk4 uses a spring-loaded ball and hall effect sensor inside of the extruder instead of an IR-chimney on top, I'm 80-90% sure that issue will have been fixed now. (the fourth point relates to multi-material prints, specifically PLA and soluable BVOH. Towers would sometimes delaminate and fall apart, which actually wouldn't often make prints fail somehow, but was obviously not ideal. This was solved by simply putting the transition tower inside a solid PLA object that was a little larger, which was jank but did work). Two way coms between the MMU and the machine itself will also help make errors more understandable, instead of the Mk3 only being able to tell you that the MMU is throwing a fit, and you having to look up the light pattern the MMU is flashing at you. I'll still wait but hearing that the filament sensor was changed on the machine itself makes me pretty hopeful. I just hope they incorporated the other improvements I listed out too, though they were more fixable for a regular person.

[@barrag3463]

​@@dggcreations everything outside of actual toolchangers have some issue or drawback, really. Single Hotend setups will have issues of purging and load-unload, but multi hotend setups tend to more usually be direct drive meaning they're heavier (idk why that is, back in 2014 the ones I saw were mostly Bowden, but that was back in the early days of consumer printers). I don't think Single Hotend Multiple Extruder set ups are all that bad, issues with them mostly have to do with loading and unloading. Personally the easiest time I've had was a Neptune 2D, after inserting a correctly sized liner (they put in one that was too short) and switching it to PrusaSlicer which is better set up for SHME set ups, and I've converted a Multi-hotend Multi Extruder printer to the same kind of set up. The main difference is that with these SHME setups things are much simpler, the filament is simply parked by it's own extruder motor in a bowden tube 20ish mm from a 2-way splitter. Compare this to the MMU2 and the AMS, which are separate addons that have to "hand-off" the filament to the printer itself, meaning that, at least in the case of the MMU2 (I've not had the pleasure to work with the Bamboos or an AMS), the machine doesn't actually have any way to fully utilize the MMU2S, just ask it to load and unload, without even really having an idea what was going on with the MMU2S. On the MMU2S this was exacerbated, like I said above, by poor sensor design on the extruder. On the AMS from what I gather things are similar, with issues relating to spools not being able to be tensioned or parked correctly (from what little I know on the AMS' operation). By the nature of the Addons being Addons, the introduction of "handing off" the filament adds a point of failure. One thing I wish I could work with is the MMU1, which essentially does a similar thing to the Neptune 2D in that different filaments have their own extruder motor, and all are fed through a 4-way splitter into the hotend. It makes me wonder why they switched from that to the MMU2S; if I had to guess, maybe having a companion board for the four motors was as hard to implement as the MMU2's buddy board. I guess though my main point is that the SHME set ups work better if the printer is designed that way to begin with. I also agree on the Palette also. Working with the Palette 2 specifically, sometimes different filaments of the same type didn't play along well, and for what we were doing (PLA+BVOH support interfaces) it just didn't work. It tries to get around the "handoff" problem by splicing everything into one filament, getting rid of the load-unload issue, but makes everything more complicated by introducing a 3rd machine (the pi, and an underpowered pi at that) and having 0 recourse for you if the filament broke (at least with an MMU2 load failure it is possibly recoverable- just make sure you use a heatgun or blowdryer to heat the top layer of the print quickly and carefully).

[@AFourEyedGeek]

Love my MK3S+, I won't be upgrading but this does look great. I appreciate that they have focused on reliability, I don't want to spend time tweaking my 3D printer, I already have a hobby in repairing old devices, I use this printer to print replacement parts.

[@SeanTaffert]

So why didn't they use die cast metal parts for the rest of the machine, not just the bed? It would be MUCH stiffer that way. I feel PRUSA just cheaped out on this.

[@MrBlackmidi1234567890987654321]

probably not live up to RepRap

[@Kebekwoodcraft7375]

My next one is the XL 5 heads 😊 It’s seems to me those Prusa guys are honest and give you the right time it worth something to me 😊

[@peterdecroos1654]

I want to see how this compaares to the bambu carbon x1 in print quality

[@Defyant123]

It dosn't compare it wasn't made to compare (you heard Joe) it wasn't built to compete with the X1C , you don't bring a zucchini to a knife fight.... it was made to compete with the Mk3 which it does and wins! hands down. It was produced to get MK2/Mk3 owners to upgrade to Mk4... Which it obviously does extremely well too.

[@Defyant123]

@@dggcreations No offence pls...I don't see it that way.....The ppl who buy machines like Bambu's think different to those who buy Prusa... red blue left right "lets go branden" swj's etc. You see it here.. a microcosm that's representative of the real world. Sure Prusa may have looked @ the features of other printers.. not just bambu but everyone. Taken those ideas and put them into the Mk4 (Joes been doing this since the Mendel)but they know the person who buys a creality a Bambu lab a voron a ratrig ...90% of those ppl are not going to buy a Prusa and vice versa. What they are banking on is the core supporters. When you pitch this to a board what's your guarantee of sales for the expenditure. Your core audience. You always bank on your core. And they will wait patiently.

[@LightCraftStudio]

@@Defyant123 I don't understand this blind brand loyalty, its a company, it doesn't care about any of you really. but thats beside the point, why buy a printer with a name when you are getting inferior tech for the same price. Speed is not the end all be all but like do none of you value your own time? I find I can get through projects faster when I'm not waiting overnight for a part that could be done in half the time.

[@jeremytodd1]

Woah. Same flow as the standard V6 nozzle? That's pretty disappointing if true.

[@MadeWithLayers]

It's the same size meltzone and similar geometry, so it kinda makes sense that it would perform similarly. However, they are working on high-flow options and there's nothing that's keeping you from throwing a Volcano on there if you need it.

[@jeremytodd1]

@@MadeWithLayers Wouldn't throwing on a Volcano also mean that a mod would be necessary to line up the nozzle cooling fan?

[@CanuckCreator]

@@jeremytodd1 thats a simple 3d printed part, easy to swap, and with the load cell bed probing no need to adjust z offset

[@jeremytodd1]

@@CanuckCreator True. Though I was mainly getting at the fact that I don't know how to model up mods like that so I'll be reliant on waiting for someone else to make the mod lol

[@dalerbsr.5061]

If I purchase the Mk3s+ to the full Mk4 upgrade kit, would I be able to have left over parts to upgrade my original i3 mk2 to a mk3?

[@btan4209]

Nice job, Thomas. I have been waiting for a video from you before making a decision . Your insights are very welcome. Questions I wanted answered you covered thank you for your efforts.

[@LordCreo]

I want to see a comparison with the Bambu X1 Carbon, I kind of think the MK4 is too little to late, for the same price the extra intelligence and tech in the Bambu is substantial! I'm in the market for one of these, and I'm far more torn than I was when I started considering a new printer 6 months ago, I was hoping for more from th Mk4 to make my decision easy again!

[@ashleys3dprintshop]

You wont see a comparison of any bambu lab printer on Tom's channel anymore. Putting aside the closeness with Josef, he swore off BL printers since lower end P1P crushed his hopes that prusa has an answer to the competition. The X1C would be a further thrashing he doesnt' want to subject his old faithful to.

[@LilApe]

@@ashleys3dprintshop He swore off bambu lab because of all the toxicity around their fanboys, how they harass people and doxx people who don't follow their views. Congrats, your comment just proved his point in why he swore off bambu lab. Tom isn't a paid shill and he doesn't need to support companies that actively allow harassment to go on in their communities. To this day, bambu lab has yet to condone all the harassment and doxxing their fans have done. Even their own FB and discord mods were in on the harassing. Congratulations on adding to the bambu lab toxicity.

[@nightcrayon]

@@ashleys3dprintshop Yup. The "Bambu community" is so toxic that he decided not to continue reviewing their machines- presumably he doesn't have time to sift through all of the hate and personal attacks to find any reasonable criticisms of his work. I would still like to see comparisons and I'm sure someone will do it. Namely on the print quality of resulting parts - appearance and strength (it's already known that a default X1 in default settings is printing weaker parts at that speed).

[@ashleys3dprintshop]

@@nightcrayon nice try. That was Tom's excuse but he is friends with Josef. He is one of the few content creators that have permenant affiliate links on his website to prusa. I watched the meltzone podcast with Stefan and he was downing BL before he ever touched one. Stefan, who did have one, sang it's prasies and still makes videos.(last video was April 1st) He got a free p1p from BL, he made 2 videos. He saw first hand what the Lower end p1p can do and decided "trolls" forced his hand. As as far as I can tell he never returned it. I'm not buying it. There are trolls everywhere online. If you show you are affected by the they will continue. "don't feed the trolls". Even nero3d who kicked off the misinformation, backtracked and apologized, still covers BL products. So again I am. Not buying it. I have an mk3s+ and X1CC and they are not comparable in the least. Mk3+ isn't bad but it has fallen out of favor in my work flow.

[@LilApe]

@@ashleys3dprintshop Good ol bambu lab toxicity, you're breathing proof of it. 1st, nero called out a very serious concern, it got so bad, that bambu lab had to change their TR detection from 3 mins, to 30 secs, due to the overwhelming amount of backlash. Bambu lab literally said they put a 3 min timer as to not give "false alarms when printing". Which is a bullshit excuse. Its not neros fault that bambu lab has ZERO transparency and refuses to let their users know about their firmware settings. 2nd, there were literal hate threads regarding thomas, all because he said factual things about the P1P and bambu lab as a company, that the fanboys didn't like. And the toxic trolls straight drug him through the dirt over his valid opinions. This is all been documented. On YT, reddit, twitter, discord, FB, and BL forums. And comments like yours just prove his pooint about how toxic you fools are.