PRUSA PRO HT90 - The Best Desktop Printer for Engineers

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PRUSA HT90: www.prusa3d.com/product/prusa...
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0:00 Intro
16:58 What Do You Want to See More of

[@BitterCynical]

I look at this beautiful piece of technology and know with absolute certainty I'm just a caveman with my poorly modded Ender 3.

[@jaya6291]

I still use my original ender 3 too from 2019. Parts are cheap and it's easy to fix. I will keep it forever.

[@BuzzingGoober]

​@jaya6291 no point. You can get cheap, but big upgrades with the ender 3 v3 se or ke, and several others. Bought an ender 3 ke for $80 on ebay that needed a minor fix.

[@helixxharpell]

Dude... stop!! 😂 I'm an old grognard engineer with 30+ yrs experience and you young dudes with your "mods" make me feel like a hillbilly.. which I am too. 😂😂

[@helixxharpell]

I JUST DROPPED A GRAND this week on a Qidi X Max 3 to keep up my production needs. It arrived June 28th & I still haven't had time to get it even turned on! 😂 Being "old" I experience "kid-like excitement" & anxiety, hoping this machine won't disappoint me. 😂

[@daliasprints9798]

@@BuzzingGoober The se and ke are made to be less moddable and maintainable. An original e3 with $50-100 of upgrades is a better machine than them. Certainly don't throw out a well tuned original e3 for one of those clunky things.

[@BurninGems]

Cool... as in that's the cooling method. Just like those of us that used the old CPAP machines and hoses to force a separate airflow so it wasn't just recirculating hot air in a chamber with a small flow fan forced through some squinty air ducts. I'm glad to see it at the commercial level but not really a prusa invention. Just in case someone else in particular needed to point that out in a negative way, but I see it as a positive step in printer evolutions. Edit: I missed the part about the servo flap. That IS cool and unique, as far as I recall. So I do give them a hats off there also.

[@NathanBuildsRobots]

I’ve though about doing it but they’ve gone and done it, and in a tiny lightweight package. Actually the method I’ve though about involves a passive flap, with airflow selected based on fan speed

[@thejosefprusa]

Hi there and thank you sir. There is one more cool detail which isn’t in the video. There is a second flap for the intake. For materials like PLA the intake is switched to the outside - you can print fast without opening the doors of the machine or similar shenanigans ❄️

[@BurninGems]

@@thejosefprusa awesome advantage.

[@zakariakhamees]

Delta printers are definitely back!

[@3DPrintingNerd]

GREAT LOOK at this wonderful machine!

[@hightempreviews5137]

Says the VisionMiner shill

[@SushrutPhutane]

I have all the Bambu labs but recently bought a MK4 & the machine absolutely fascinates me. Even if it not the best vfm rn, but as an engineer I really love it compared the appliance looking bambu machines. The love & care which they put into making the prusa is definitely felt.

[@jackmancrazy]

The audience Prusa marketed this toward (businesses) may provide some more financial stability since they are definitely being out-competed in the consumer market at this time

[@NathanBuildsRobots]

They have never really have made a low margin, mass market printer. Their factory isn’t geared towards producing 100k printers a month so they can’t price a product to sell in those numbers. I think they’ve always focused on selling a higher profit margin product with better QC and support. The market for that has always been more niche and geared toward corporate users than your Crealitys, and Bambus of the world

[@bernardtarver]

Don't kid yourself. Companies buy cheap printers too.

[@carlosjosejimenezbermudez9255]

BambuLab arguably can't be profitable without chinese government subsidies, china is cheaper, but not by much.

[@NathanBuildsRobots]

@@bernardtarver depends on the company

[@NoMercyFtw]

@@bernardtarver yes they do and some of the smart ones don't like to throw away money just cause they're successful

[@JSparrowist]

yay! prusa! I can hardly contain my excitement!

[@astrumrocket6556]

This is really cool, not that I will ever likely own this printer, but it's nice to see it chugging. Also, funny that, other than ball screws instead of belts, a lot of the explanation on how high temp works here is similar to the ideas I had in your previous video where you explained delta kinematics 😀

[@Gholson314]

Good to see you around at rapid Nathan, I was also impressed with this machine

[@timothyjones7907]

I’m really happy to see you getting more sponsors, it seems

[@timothyjones7907]

Absolutely incredible machine btw😂

[@VideoJocky1]

I think it is interesting that FLSUN and Prusa both came up with similar hot end cooling method.

[@kylewellman402]

The print quality of that shoe thing was absolutely amazing. I've been looking at other print methods because of the layer lines, but you could hardly even see them on that shoe. If this is the future, and printers like these that can print the high grade engineering filaments become even cheaper and affordable for home shop... man I'm excited lol i have my small business machine shop and i offer very limited 3D prints just because of my equipment. I sit here and imagine the possibilities if i had a printer like the HT90. Being able to print fully funftional gear trains for different machine tools would be super nice.

[@TheTranq]

I love this, I hope to own one soon.

[@darkenblade986]

for those wondering the link says 10k

[@NoMercyFtw]

I love this comment

[@eatthedead1ify]

lol that Steve cameo/photo bomb!

[@leonidkalasknikov3714]

Damn, I was there at the expo and I completely missed the Prusa booth. Hopefully I can catch them next time.

[@Popisovac_]

Love this machine ❤

[@NathanBuildsRobots]

It’s pretty

[@tshev]

It would been interesting to see the Califlower measurements for this printer.

[@jonathanballoch]

this thing is insane

[@aware2action]

Would love seeing the Flsun T1 modded with liquid cooled extruder(might need switching to remote bowden drive) and a PTC chamber heater, just for fun🤯❤👍

[@lynntatro7374]

Can the FL Sun T1 or S1 be modified to perform like a Prusa Pro HT90?

[@user-ie6qc6ug9g]

What difference does it have from the Flsun S1, I'm curious ?

[@Factory400]

If reality matches the promises, the price is right for me. Reliability is king when you load up the really expensive materials.

[@ficklecycler]

I remember hearing a loong time ago that delta printers get more inaccurate towards the outside of the build volume due to the geometry of the arms. Is there some way to account for that on a printer at this level with software or is that still a limitation to consider?

[@NathanBuildsRobots]

Anything can be accurate if it's built properly. The issue arises when the arms aren't the right length, or the frame is crooked. If it's built exactly to specification, it will be accurate. The problem is that most printer's aren't built very accurately, and the problem can be magnified on a poorly-built delta. Given the overall attention to detail on the HT90, I'd assume they made sure to build everything to a high level of precision, and that it will be more than accurate enough even towards the edges.

[@antonioesposito8071]

it's a flsun s1 with a heated chamber but the price have a 10X multiplier, in some months you will se a clone og it for 3k max

[@Seaofjitsu]

Dammmmmm I would love to do delrin on this 🎉

[@jarrodlangford7692]

Its a write off anyways so i can see the higher temps getting some sales for engineering firms. I sell volume though so for me ill stick to bambu but Im sure itll be a reliable beast for expensive filaments.

[@radarmusen]

Like the Wi-Fi dongle and the slide for the camera for privacy it seems more trustworthy.

[@NathanBuildsRobots]

Yeah, and no 3rd party closed source wireless plugin like with Bambu Lab slicer. That just feel shady to me.

[@user-dm5lw7oo2s]

No drying chamber to kept the filament out of moisture...

[@NathanBuildsRobots]

The red ABS/ASA print didn't have one, the ULTEM print next to it did.

[@tshev]

Love it. The only drawback I see is that there is no built-in filament dryer or a dry box.

[@NathanBuildsRobots]

The one next to it was using a dry box. Having that as an external feature makes a lot of sense to me, changing filament is one of the most common tasks, so making it as accessible and easy to operate is a good thing.

[@tshev]

​@@NathanBuildsRobotsI hoped for an optional stackable dryer on top of the printer. Ideally, it would have been optional and allowed to use up to 5 kg spools. Anyway, it's not a problem. Maybe it's a stupid idea, and the current solution is better. Also, it would have been interesting to understand the longevity of this printer. How many KM of the filament to start experiencing issues? My Prusa MK4 Kit is in good shape after 4.7 km, but 4.7 km is nothing. I am considering buying this printer after resolving other priorities.

[@VacuousCat]

I'm holding my tablet in an angle to watch this video.

[@SkateSoup]

I spy with my little eye, Mark from Peopoly around the 13 minute mark checking things out. Magneto D confirmed?

[@NathanBuildsRobots]

That would be interesting, though it probably wouldn't be high temp Magnets that can survive the high temps are a little weaker and more expensive than standard magnets

[@muddymaker3721]

Reading some of the comments complaining about the price and capabilities of the Prusa Pro HT90 compared to cheaper machines is akin to someone complaining that the sky is blue and it's unfair lol It's a machine designed for a specific use case that comes with a price tag hahaha. I'll never understand these people that whinge and whine about a product they seem to never like or even owned any of their products but still watch videos on the products and have the energy to write disparaging comments about said product lol *rant over*

[@NathanBuildsRobots]

Dump trucks are too expensive, I can get an F150 for 1/10th the price.

[@muddymaker3721]

@@NathanBuildsRobots lol

[@andreas.grundler]

I have seen similar comments under a video regarding the new Vision Miner printer. They complain that the printer doesn't have lidar or an accelerometer or a camera.

[@helixxharpell]

With my production needs & low budget this printer will probably never see the 4 walls of my print room. 😢

[@VyisKhooyaojiunn]

Isn't that Magball arm that have been around since kosell / ultibots era?

[@__S__435]

Most likely. If the cups that sit between the arm magnets and the chromed steel balls are made from delrin, they will last for an extremely long time and never require any lubricant. I have also seen U-joints (like the original Kossel) and Traxxas arms (like on the original SeeMeCNC Rostock MAX), but nothing beats mag arms.

[@VyisKhooyaojiunn]

@@__S__435 Yup that's gold standard for delta arm. Always in my mind to build this if my Traxxas arm fail.

[@__S__435]

@@VyisKhooyaojiunn Traxxas joints wear out and get sloppy over time. Happened to me and many others. It's why SeeMeCNC stopped using them. They're meant for remote controlled cars and planes.

[@platin2148]

Wait it's open on the bottom? So it will throw 90 celsius hot air out?

[@riba2233]

No, it is not

[@platin2148]

@@riba2233 So kzbin.info/www/bejne/nIvLq6SAaNFnq6Msi=OGbBfA-d_CWolF0A&t=556 is not meaning there is a real view into the chamber?

[@NathanBuildsRobots]

It’s a little window, it’s not open air

[@NathanBuildsRobots]

Meaning, it’s a bit of clear plastic there. They just moved the handle up a little so you can peek into that critical area if needed

[@terranceroberts6259]

I am a prusa fan. But isn’t the idex 3 printer from vision minor a better deal than this? Not that I can afford or justify buying either one.

[@NathanBuildsRobots]

I think a lot more people have had experience with PRUSA printers in the MK3S and the MK4, so it's an easier sell to management to say "buy one of these because we've bought a printer from them before and know how to use the ecosystem"

[@yayinternets]

I think this printer is like the middle ground between say a Bambu X1C and the latest VisionMiner. VM is well setup for selling to big companies, government and have a whole plug and play type system for engineers and specialty manufacturing. Not to mention, more experience in that target market in general. This Prusa is probably more like a good value for small businesses who don’t necessarily need or want the overhead of needing a whole big support system that has a lot of profit margin built in, and can build a small fleet if needed at lower cost per printer.

[@riba2233]

VM had some serious issues :|

[@nobodyuknow4911]

Well, I'm looking at the 22 IDEX v3, and it has a "higher ceiling" than the HT90, but it also has a considerably higher "floor" as well given that it starts at basically $15,000 The HT90 isn't cheap by any description of the word, it starts at basically $10,000 as well, so it has to punch a little above its weight class to show them up and nip at the heels of the 22 IDEX v3 so to speak. As such, it's got a few less bells and whistles, but offers more than hobbyist-consumer-level products... In any event, short of robbing some banks... repeatedly... I'm not in the market for either, just comparing specs and advertising fluff

[@lynntatro7374]

Doesn't the 22 IDEX v3 have 9 motors whereas the Prusa Pro HT90 have 3 (as well as the FL Sun S1 and T1)?

[@notchipotle]

he kinda looks like walmart RDJ

[@HuskysAquariums]

PRUSA: "we came up with a new cooling system"....DIY 3D Printing community (VZ BOT, RatRig, Voron): "WTF????"

[@TheOneAndOnlySatan]

Prusa asks 9990,00 dollar for it, no joke WTF prusa.

[@NathanBuildsRobots]

It comes with a $9 discount!

[@matthewwain9958]

It's not aimed at the home, it's aimed at an industrial application, which almost certainly means it comes with a ton of support in that purchase.

[@TheOneAndOnlySatan]

@@matthewwain9958 do you see any of them react here ? No its hobbyist, companies dont look at something like this. That pilot in Germany that they spun like its part of assembly was just a sale agreement

[@matthewwain9958]

@@TheOneAndOnlySatan as far as I have seen when I looked last week at the HT90, it was being used by quite a few automotive companies. No hobbyist is going to be buying a 10k Delta when they can buy wayyy better value machines. These are intended for industrial applications.

[@nobocks]

😂😂😂😂​@@NathanBuildsRobots

[@eaojnr]

Prusa shoots straight to the top of the delta style printers... wow!!! And that price tag makes me shake too...

[@giovannifontanetto9604]

its probably the least costly machina with these features. By like 3 to 4 times.

[@NathanBuildsRobots]

Yeah but when you’re printing filament that costs $1000 per kg, for parts that get installed in machines that costs $1,000,000+, and the alternative printer that your company has access to is $200,000 and the size of a car, and located in a separate building… suddenly the cost of the printer becomes less of a concern. It’s definitely not aimed at the hobby market

[@adammatic]

@@NathanBuildsRobots Sounds like a good strategy, these printers can have high margins. Is is also open source? Could people copy it?

[@colinmetzger6755]

Creatbot PEEK printer is only about 4 to 5k more expensive and can get the chamber to 120 IIRC and you can heat the filament container to 100C to keep your PEEK dry.​@@giovannifontanetto9604

[@eaojnr]

@@NathanBuildsRobots indeed, indeed! That’s the Pro-ness

[@vim55k]

Not idex , so how to print support..

[@NathanBuildsRobots]

That is a good question, that is the only feature that is missing that a lot of engineering applications might miss. It shouldn't be too difficult to fit one on there as a future upgrade.

[@__S__435]

Supposedly the active part cooling addresses that, though I suspect it's not feasible to rely on that alone in every case. Some customers will inevitably print using the main filament as support, and then someone will have to go through, cut it off, and sand the interface sprues down. That will be a "good enough" solution for many.

[@vim55k]

@@__S__435 you mean to extra cool the support for it to not stick?

[@thePavuk]

Interesting, pretty prints. But I feel like I would trust 22Idex from Vision Miner more. 15K but idex, and higher temps and volume.

[@riba2233]

Why they have a poor track record

[@ivoidwarrantiesuk]

Did he say affordable? It’s £10k! Prusa please don’t go down the apple route and over price your stuff

[@marcelo962]

First? It's criminal to be this early 😮

[@us3rnam3144]

10grand ..............are they high?

[@Xpr01]

but the filament is in the free environment without any case? It's a huge mistake I think.

[@NathanBuildsRobots]

If you look at the printer on the left it is using a dry box. Don’t worry they’ve thought about this 🤣

[@lavafree]

Nice machine…looks expensive 😝

[@Mintor94]

It is. But it's enterprise class machine

[@NathanBuildsRobots]

Would be a shame if one of the display models disappeared overnight 🫥

[@JosephStory]

00:13:24 Steve photo bomb, hehe

[@NathanBuildsRobots]

Get him outta here!

[@roystevens4333]

So Prusa has designed a FLSUN S1 for four times the price. This is certainly an improvement over their X1C copy that was only 3x. Always the innovators over there in CR. Can't wait to see the next printer they copy.

[@krollmond7544]

Definitely expensive but honestly props to Prusa for doing their own thing rather than the copy and paste speedy multi color prints. Idk why Bambu fanbois keep coming on these Prusa videos lol. "I bought a Bambu, I'm so happy with what i have. I never looked back at Prusa. So let me comment on ever single Prusa video".

[@Vallecaucanisimo]

I wouldn’t be surprised if many of those comments are fake, just like amazon reviews.

[@krollmond7544]

@Vallecaucanisimo yeah possibly, but damn do they get around lol.

[@OuijaSTi]

I have a Prusa Mk3.5 and a Bambu X1 and the Bambu wins hands down for my purposes. Doesn't mean the Prusa is bad, Bambu just pushed everything forward at their pricepoint.

[@krollmond7544]

@@OuijaSTi that's a lame comparison lol

[@riba2233]

@@krollmond7544 how so?

[@mrt5393]

Mr Prusa was bashing on CoreXY when the MK4 came out and here they are highlighting the benefits of a still heatbed. CoreXY is the way to go in general, once you realize how hard to accelerate and deaccelerate a growing mass is, you know that bed slingers are now considered entry level printers. Time for a Prusa XL Mini to get the cost down and move to CoreXY, the community made that decision. Once you see a Creality K1C or upgraded K1 beating a MK4 in most aspects, you know you have some work to do...

[@JSparrowist]

prusa get the cost down. XD I'm dead.

[@LilApe]

This dude just tried to compare a creality K1 to a prusa MK4 lmao They're worlds apart in build quality and reliability.

[@JSparrowist]

@@LilApe You're right! The K1 doesn't melt when put into an enclosure and printing high temp materials. XD

[@youtubehandlesux]

Cartesian is strictly better than delta or corexy when it comes to print quality, period. And I own a corexy printer with 35k acceleration, just in case you doubt me.

[@JSparrowist]

@@youtubehandlesux XD sure..

[@Denniss7420]

"Oh yeah, y'all - it's better than the X1C........but Ten times the price!!!!"

[@NathanBuildsRobots]

And 1000 times the price of my 3D printing pen!

[@carlosjosejimenezbermudez9255]

Because of course an X1C can print Ultem at 400 celsius, with an actively heated chamber, right?

[@__S__435]

​@@carlosjosejimenezbermudez9255 That is what the naysayers keep missing. "For that price, you can buy X number of Y!" But the Y printer can never hope to approach several of the capabilities of this printer. So you bought ten of them for the same price as one of these, congratulations, now you can have ten printers failing to perform the needed work in parallel.

[@Denniss7420]

Forgot to add: $900.00 to ship, $213 for the prusa pro filament dry box, $2,100 for the UF30 filament dryer.

[@NathanBuildsRobots]

@@Denniss7420 not 100% sure but I believe PRUSA RESEARCH is a private company that is self-funded. The worst thing you can do is underprice your product and lose money on it, because there are no investors, loans, or subsidies to fall back on.

[@danieljack4855]

I'm going to say this right now before anybody does says this. Prusa is going to perfect the Delta 3D Printer model and is going to beat any competitors it competes with. However that's if bambulab comes out with a Delta 3D Printer Model and it's way cheaper.

[@matthewwain9958]

1) Prusa buys a delta company rather than developing it themselves. 2) Prusa improves it?

[@Z-add]

Intamsys funmat ht is $6k. How does prusa expect to compete with them for $4k higher price tag. Instamsys is proven industrial machine.

[@NathanBuildsRobots]

Sure but it's probably not as quiet or as nice to look at and pretty sure it's slower.

[@Immolate62]

Can't wait until Bambu makes one for $1500.

[@NathanBuildsRobots]

Bambus similar offering is the X1E It’s nice but it only goes up to 60C chamber temperature. Getting all the way to 90C is a pretty big deal, as it requires you to replace grease, belts, and electronics with high temp variants. Also it requires additional sealing, insulation, and higher power draw.

[@LilApe]

It'll probably come with a recall too.

[@JOEDHIGGINS]

​@@NathanBuildsRobots I think the only particularly hard part of all high chamber temperatures is magnets and electronics. Gotta keep them away and insulated from the chamber (which makes for a bunch of added design restrictions, and why I am assuming that they went for a Delta) or you have to use relatively exotic materials in complex fabrications. Weirdly though, something like this is really a problem of scale. We can print most things short of to PEEK, PEKK, and large parts of pure Nylon in a Sub 1k printer. Those materials in filament form are pricey because nobody buys them. Nobody buys them because they are a pain to print (even on the machines that are pretty good at them). So for this to really work outside of ultra niche applications, someone needs to make a reasonably priced printer that will print these materials reliably (probably both a hardware and software solution given the material shrinkage rates). That way the filaments themselves can commodify and become reasonably priced. Then we may see this more in engineering applications. But for now, 90C buys you pure nylon, not the ultra-high-end stuff, and now you are competing with a bunch of SLS printers in the 10k price range, but you are accepting worse quality for a larger build volume but slower production rate and anisotropic part strength. Not sure if FDM will be the ultimate solution for high end thermoplastics, but I don't think that a 90C delta for 10K is a meaningful step to the goal. It certainly doesn't get us any closer to production at any meaningful scale, and what is the point of prototyping with the correct material (say unreinforced nylon) if my prototype will have necessarily different properties when compared to a part made in whatever my ultimate production method turns out to be. 90 C is in no specs I have seen recommended chamber temp for PEEK PEKK. Seems like it may work for smaller parts, but I would wonder about layer adhesion. Also, I definitely don't need a 90C chamber for ASA and ABS.

[@youtubehandlesux]

And mediocre with questionable design choices, just like the rest of the bambu printers.

[@youtubehandlesux]

​@@JOEDHIGGINSAfter testing out how strong ASA parts printed in 65C chambers are, yes you need high temperatures to bring out its full potential.

[@130lexa]

10K and you can be pro and print nylons from open spool...haha jeesus.

[@NathanBuildsRobots]

They have a dry box for the higher temp materials. If you look at the printer on the left it is using one. But at the same time, if you want to use materials that don’t need a dry box, an open spool in an easy to reach location is the best solution

[@kyky7kyle7]

Ripoff flsun with less features and more price

[@NathanBuildsRobots]

😂 lol, what?

[@NoMercyFtw]

Let me guess before I even watched the video the price is going to be$5299, Prusa TAX baby, Prusa is one of those companies that tries to be elegant and ahead of the curve but honestly since getting into 3D printing Prusa just seems like the old dude on the block that keeps beating up kids for their lunch money because he can because he's bigger lol, I don't think I'll ever buy or own one from them because they just don't seem like they're good at anything in particular, it's like buying an old DOS computer now to using your workshop for editing, are they ever going to catch up or find their way cause it seems like they're chasing every thing trying to make something stick they have one core XY machine now they're going to have one delta machine now I'm not a prusa scholar so I don't know if they've ever done this before but are there any other one off machines that they have that I'm missing, the one thing I'm going to have fun with is buying old prices a few years from now when they're put out of business or bought and rebranded and stripping them for parts

[@Mintor94]

It's almost twice that

[@NoMercyFtw]

Holy hell I was way off by almost half they are truly out of their mind

[@NoMercyFtw]

@@Mintor94 yeah I see that I guess I was just giving them the benefit of the doubt

[@Mintor94]

@@NoMercyFtw this is not supposed to be a printer for an avarage joe, enterprise class printers can be a lot more costly

[@krollmond7544]

Before you jerk yourself off too hard, maybe consider Prusa targeting a different audience rather than the Apple of 3D printers AKA all the idiot proof printers Bambu released that probably can't print engineering grade material like this printer can.

[@reyalPRON]

6:30 he says more heat = more layerbonding.. thats bs! utterly bs... more temp = cooked filament = worse bonding. and these ppl make machines??!? wow.... more temp = brittle.

[@youtubehandlesux]

More chamber temp equals better bonding even for PLA. Stfu if you don't understand the basics of fdm printing.

[@daliasprints9798]

Indeed this person has no idea what he's talking about. Even PLA doesn't "cook" until at least 250+, and only if it sits at that temp a long time. Good bonding comes at 240+, especially important if you have adequate cooling for sharp overhangs and short layer times.

[@NathanBuildsRobots]

The guy I was interviewing knows more about 3D printing than me, so pretty sure if he said something he was right

[@TNX255]

What a weird comment :o Have you ever tried 3D printing in real life?

[@reyalPRON]

@@youtubehandlesux he was saying this when mentioning the nozzle. go back and see?

[@VoluntaristSociety]

looks like a clone of flsun.

[@krollmond7544]

I doubt the FLSun can print PEEK

[@VoluntaristSociety]

@krollmond7544 sure but a heat block upgrade is not the same thing as it being a unique or improved printer design

[@krollmond7544]

@VoluntaristSociety I haven't seen anything other than corexy, delta, bedslinger and belt printers.

[@riba2233]

​It is not just the heat block lol

[@krollmond7544]

@@riba2233 holy shit this man is in love with me lmao