Introducing the POSITRON LT

[@gihadmurad]

Is that bed unheated?

[@3DPrince-zd1se]

It is heated. The bed is coated with ITO and there are electrodes on either side that put a current through the coating. As far as I'm aware, the transparent heated bed is a new technology that was first prototyped by Harry Loud. Here is a link to the product: muon3d.com/products/positron-v3-transparent-heated-bed

[@JustCuzRobotics]

@@3DPrince-zd1se Very cool, I was about to ask the same thing!

[@gihadmurad]

@@3DPrince-zd1se Very cool! Wasn't aware of this tech.

[@Grimmwoldds]

@@3DPrince-zd1se Be honest. You got this 3d printer design out of area 51, right? :P

[@TheEvilVargon]

This makes me so unreasonably happy. I've been wanting to build a Positron v3 but acquiring the components were always annoying as hell. I'll definitely be building one of these one day.

[@Pumpkinwaffle]

So glad to see this printer being picked up and actively developed. it has a huge potential for people who travel a lot. Having on small printer on location to validate a design is something I'm often missing.

[@youtubeurevil]

Bring a K1 I can highly recomend it

[@Pumpkinwaffle]

@@youtubeurevil Do you often travel with a K1 in your backpack / suitcase?

[@katiebarber407]

wouldnt it just make more sense to visit a print shop in town if youre traveling rather than carry around a small printer?

[@Pumpkinwaffle]

@@katiebarber407 that's what I do yes. But print shop aren't always nearby, it's extra cost, you don't control the materials available etc. If you have to leave the location to collect your part, bring it back to test and repeat 5 times for each iteration at this point 3D printing stops being a comvinience.

[@DonaldBaysII]

Very cool to see this project still going in some capacity. I wasn't aware the old "belt" system was that problematic, it had a nice look too it. I will be nice to see how far this project will go just because this design has so many positives.

[@AirsoftAbominations]

there were print surface artefactsintroduced by the unsmoth runing over the gears of syncromesh

[@zumuvtuber]

It’s so cool to see a revival of the positron project! Awesome work! I can’t wait to see where it goes in the future.

[@UncleJessy]

Can’t wait to see more on this

[@lunaumbra5179]

Thank you for working on this amazing concept. I really need w printer like this since i live in a van. Having a printer fold up and pack in to a box is critical for me. Please continue your efforts to make this as good as it can be. I will make/buy one in the future.

[@DalTronPrinting]

Awesome! I haven't finished my build because I've gotten too busy unfortunately. But super cool seeing this on KZbin! Also, thanks for all the help online.

[@Murgoh]

A very interesting concept and a neat design and I'm sure many hobbyists will be building these for a technical novelty if not for anything else. But I think a real world use case for a small, portable 3D-printer is much less common than many think. Yes,some people will actually have a need this will fill (like someone living in a very small apartment/RV/trailer or something like that) but for most I think a "stationary" printer will still be enough. Years ago I thought I want an easily portable printer to take to friend's houses etc. so I got a Turnigy Mini Fabricator. Yes, a lot lesser printer than this one with only 100x100x100mm build volume but it was the most portable machine easily available at that time and would have been fairly easy to transport. For the few months I had it it never left my apartment and I did maybe a dozen parts on it. Never found a real occasion when taking a printer with me would have been a good idea, why bore your friends by having them watch a 3D-printer working for an hour or two when everyone has already seen one? Much easier to print the parts at home doing something else while the printer did it's thing. And for printing at home my larger printers were so much more convenient and had better performance. So I ended up selling it after less than half a year. Still, as said, an extremely interesting design and I'm sure many 3D-printer enthusiasts will want to build one just for the fun of it, even though it's kind of expensive for the specs and probably more fussy to use than a regular printer.

[@quanduipro204]

This is great news! Looking forward to a build series/ detailed documentation when the design is ready.

[@josephvore9714]

Cool content - looking forward to future updates!

[@Luigik99tv]

Love the Design of this printer! Thanks for your work!

[@MrKennykyle1]

IT PRINTS UPSIDE DOWN WAAAAAAT

[@crrc77]

as for the original one: I just hope so much that this will come as a full (and fully tested) kit.

[@PeTr01]

very interesting, I havent kept up on the discord so I didn't know kraylyn was MIA. Well I commend you guys for continuing the cool design, I think the coolest thought is being able to fold it into a filament box and take it on the go (not sure if this printer could do that from the demo). Either cant wait to see more of what you do!

[@3DPrince-zd1se]

It does fit into a filament spool box! We tried to keep all of Kralyns original design goals

[@PeTr01]

@@3DPrince-zd1sebrilliant! Absolutely brilliant!!

[@AirsoftAbominations]

not so much MIA as hired, because of his positron designs, for acompany that doesnt want him maintaining his existing following

[@PeTr01]

Thanks for the clarification!

[@GiantRobo77]

RMRRF 2024 teased some new developments .....keen to see/hear about them in coming weeks

[@aladinmovies]

Awesome project, you are so great master

[@MrBaskins2010]

really incredible update on this project although to keep the meme alive, you need to say positron at the end of every other sentence

[@Affordy]

Positrons RULES.. Thanks for your great works... I hope this project keep develop and improve this amazing machine

[@OneHappyCrazyPerson]

You brain has been damaged by filament fumes..

[@Bodenlanham]

One of the major design goals of the positron was that it had to eaisily colapse and fit into a filement box. Were you able to acomplish this or have plans for this? Great work btw.

[@Bodenlanham]

Also intigrated PSU! wow!

[@3DPrince-zd1se]

It does, I should've explained that in the video but I guess that discussion will make for good content later on ;)

[@ww-pw6di]

Also seemed like a completely unnecessary design constraint for what was and still is a novel 3d printer design. Like building a space ship capable of travelling to every planet in the solar system... and then gimping the whole thing with the clause that it has to fit into a 10 sqm space because reasons.

[@3DPrince-zd1se]

@@ww-pw6di You're absolutely right, it's a marketing gimmick and I don't like it very much myself. But stay tuned: we've got an LTX in the works as well ;) Although, I will say that the crazy small restraint makes us break rules and come up with new solutions that we didn't even consider possible :) It's a means to an end.

[@ww-pw6di]

@@3DPrince-zd1se I'm super excited to see the first version with "powerful" motors and tuned to the gills ala v3z, 247printing and those guys. This design feels like it'll be amazing at high speed/high volume printing (at least eventually). I think the only way to fuck up this project is by stopping it. Everything else, even if an abject failure, will be regarded as a success so, best of luck with the project.

[@nofme]

I watched this and now extraterrestrials won't get off my lawn

[@jsal92]

I was just wondering what happened with the positron! Glad to see more people working on the concept! Does it still fit in a filament box and more importantly, does it still need to have the 90 degree hot end?

[@3DPrince-zd1se]

Yes and yes. Fortunately, nowadays you can get that 90 degree hotend on Aliexpress for a decent price

[@jsal92]

@@3DPrince-zd1se I didn’t know 90s deg got ends had become as readily available. If you’re aware, are they the cause of the clogging you mentioned in your video? Also, why go for a custom extruder when compact ones like the orbiter are available?

[@3DPrince-zd1se]

The clogging is actually due to heat creep because the original V3 toolhead does not cool the heat break properly. The extruder is not custom, it is a modified hummingbird extruder (a voron mod, google it)@@jsal92

[@jsal92]

@@3DPrince-zd1se thanks for the info! I think I’d built a positron once it gets more fleshed out, building v0 already took too much time to set up and time, I can only imagine the effort needed for this 😁

[@henkjanvanderpol]

Great that you continue this awesome project. Is contamination of the nozzle a problem (e.g., due to oozing) when printing upside down? And are there other disadvantages that you learned of printing upside down?

[@3DPrince-zd1se]

A good silicone sock goes a long way, but you have to be more vigilant with nozzle cleaning for sure. I use a nylon or brass brush regularly to clean extra filament off the nozzle.

[@apresmidi2489]

So.. you mean development of original v3 is halted? I thought they team up with LDO crew to make and release customer-friendly V3 kit..

[@3DPrince-zd1se]

LDO is releasing a kit with some upgrades, but they aren't disclosing their development openly and we don't know how far they will take it. Will they sell kits only and keep the design proprietary, or will they release the full design open source? Will they continue to develop after its initial release? Sorry if this point is unclear in the video, perhaps it's worth revisiting.

[@Mainsail-Crew]

@@3DPrince-zd1se Jason is very friendly and eager to answer these questions. However, since LDO has published all changes to Voron kits or other DIY printers, LDO also publishes the further development of this printer. Simply asking would at least prevent rumors about it...

[@3DPrince-zd1se]

@@Mainsail-Crew I will contact Jason and try to clarify this point. Thanks! Edit: I have contacted Jason and he said no need to edit my initial comment. LDO will release more information at a later date.

[@jeffersonsanchez3956]

Amazing work

[@admadea]

Much more likely to try and build one of these at some point now. At the same time, printing with ABS for me, as of recently, has become a must have. I wonder if it'd be possible to make a detachable hanging curtain to help retain heat around the build area, while still allowing for the small form factor and light weight?

[@3DPrince-zd1se]

I've thought of that myself, maybe a mylar screen that can come over the top of the build plate. You'll likely run into some issues with getting the bed up to temperature, however.

[@r38007]

​@@rollotomasi1832Nothing wrong with wanting one printer to do it all, definitely not pathetic. I have two printers (Voron V0.2, modified Neptune 3 Pro) that can print pretty much all materials. Not everyone has room/cash to have multiple machines so having one do it all I feel is more inline with what the whole printing community is about.

[@admadea]

@@rollotomasi1832 thanks for trying to insult me for thinking about potential ways the 3d printer in question could offer additional functionality, while still achieving it's design goals! You're a wonderful person 🤠🤠🤠

[@conorstewart2214]

@@rollotomasi1832 this kind of comment is pathetic. What is wrong with someone wanting a 3D printer to print in a different material?

[@user-cg3em4cw4f]

@@rollotomasi1832what sort of pretentious bs is this

[@BoeserBen]

👍🏻 LT ftw!

[@frankdearr2772]

Great , thanks 👍

[@rhysdoes3dprinting]

Dude this is so cool, i wish i had the money to make it

[@krissko97]

You earn a sub. I would love to build one.

[@alexgamerroker95]

What is the energy consumption? I know this might a fantasy question but would it be possible to use a integrated batery or external powerbank to supply it, and what its autonomy look like in that case?

[@3DPrince-zd1se]

Around 150 watts. Several people have brought up the battery idea, I’m sure some applications would work for that like maybe remote locations?

[@danaharrington6561]

Someone needs to design a battery pack that fits neatly in a second filament box. It would also be cool to see a solar array that fits in a third filament box to extend the battery life. You could have an off grid factory in the space of four filament boxes. (after accounting for a roll of filament)@@3DPrince-zd1se

[@DrewLSsix]

I noticed the X axis is simply a linear rail with no other support, i had this thought some time ago watching a light weight gantry video, the guy tested different ender 3 gantries for weight and resonance on a machine c9nverted to rails, and i thought simply using the rail as the gantry, with any necessary brackets added of course was the most reasonable thing to try. I know a piece of hardened steel can have significant resonance even if its very stiff, but i thought it was at least worth consideration. Also, ive had an idea to convert an ender 3 to something like this for a while now, connect the X gantry and tool head to the Y beam and invert the bed, using it for the Z axis.

[@TheKencmh]

Are you still making it portable. I was very interested in this because I'm a truck driver and I would like to have one that is portable. Can't wait to see what you do with it

[@3DPrince-zd1se]

It is portable, like the original V3 ;)

[@Allen-R]

POG

[@NordicDan]

If/when this sees production, would it be recommended for someone new to 3D printing? I've gained a much more serious interest in the last month but with so much information and so many options out there, I'm admittedly clueless on where to start. Seeing the customizability on this though makes me wonder if it'd be a good unit to start with and then be able to make changes as I gain experience and learn more.

[@3DPrince-zd1se]

I would recommend getting started with something a little simpler! Building this printer itself is a challenge, and 3D printing is a difficult skill that takes time to master. It would make it easier if you were already a bit more familiar! Good luck to you.

[@hunt0583]

will partial kits be made for some components like the custom rail sizes and the custom makerbeam lengths?

[@3DPrince-zd1se]

At this point there are no kits, but perhaps in the future

[@AudiotroniX_LT]

When we release S1 there will also be some specific kits available

[@linearburn8838]

I would try moddeing it for direct drive the btt extruder might make a good extruder

[@saraperus4696]

Great work, would love to build one of my own as well is it still as portable as the POSITRON V3 (fits in a filament box) and I don't see any display so is it fully controlled over wi-fi/bluetooth

[@3DPrince-zd1se]

Yes to all of the above ;)

[@Gixie-R]

That could be cool flipped and bolted under the desktop

[@3DPrince-zd1se]

lol

[@brezovprut4431]

Is it Klipper based? and Is it foldable (spool box transport compatible)?

[@3DPrince-zd1se]

Yes and yes

[@grindcorgz]

The bed will sag horribly as weight gets added, what compensation is done for that?

[@3DPrince-zd1se]

There are certainly limitations to the upside-down design, fortunately the bed is pretty rigid and 3D prints are generally light. You’re right, however, that there is likely a limit where this becomes problematic

[@grindcorgz]

@3DPrince-zd1se ah ok that's completely understandable for the design but even just adding strength to certain parts of the frame would reduce it a fair bit but overall the design does look awesome

[@pooounderscoreman]

So cool!

[@novice7T7]

lol buying a printer to than make another printer lol amazing

[@justchill4886]

weird question for this type of printer, so how far acceralation you got with it , i guess it might be high because its corexy type

[@3DPrince-zd1se]

Same acceleration as Kralyns V3: approximately 1G or 10k mm/s^2

[@justchill4886]

@@3DPrince-zd1se DAMMMUUUH

[@titter3648]

What is the advantage of the upside down design?

[@3DPrince-zd1se]

You can get a full explanation in Kralyns original video! Link is in the description. Short version is it enables the printer to be portable and have a small footprint

[@AlexHamre]

really cool

[@ryankohler1920]

I'm sure that you're hard at work on the printer, but can you post some more footage of it doing standard prints? I'd like to see some more quality parts like a fast, but reasonable benchy (your speedboat was very cool, but not what I would consider quality), examples of bridging, just other generic prints as time lapse or regular speed videos.

[@3DPrince-zd1se]

Hey Ryan, if you want to see LTs doing their thing I recommend you check out our discord! Go through our showcase thread and our benchy thread and you’ll see everything you’re asking for. We’ll be posting new videos soon as well, but it will be a bit slow at first. Thanks!

[@Algardraug]

This seems cool and all, but I don't understand if this is a fork of the original or it's next iteration? Is Audiotronix Kralyn? What's the relationship between this work and the work that LDO is doing?

[@lunaumbra5179]

It's a fork. These are different people. I would guess no relationship with the original

[@3DPrince-zd1se]

This is a fork of the original, Audiotronix is not Kralyn, and LDO is developing commercially available kits for the original V3

[@Algardraug]

Right, I see! Thank for responding! That's pretty exciting actually, might look into to build one of these when the time is right!

[@3DPrince-zd1se]

We actually do have a fairly close relationship with the leaders of the V3 project and derivatives. Many including LDO have used our design changes to update their own kits, etc.@@lunaumbra5179

[@stefanguiton]

Awesome

[@MrJzuz]

i will build this so hard.

[@wyattearnest5745]

Hello, is there a bill of materials available?

[@3DPrince-zd1se]

Check the comments for a link to our discord

[@wyattearnest5745]

Thanks!

[@krashanb5767]

I wonder how often prints will get unstucked from the bed?

[@3DPrince-zd1se]

That does happen, but it’s not as much of an issue as you might assume

[@crapisnice]

good design and sad DOING IT ALONE, also you can somplify by placing a rotating arm on top and using a small motor to let the hot bed fall like a markforge but with rotating and linear axis combined

[@ceeam]

Please call it "Wasp" (this is obviously how they make their hives)

[@rubendekkerallround474]

This printer is highly portable ? What can it print really wel ?

[@3DPrince-zd1se]

PLA and PETG are the most practical for it. We've been experimenting with TPU though and gotten decent results despite the bowden style (the extruder is really good)

[@rubendekkerallround474]

@@3DPrince-zd1se Pla tpu and petg, what else can you wish for ? 1Sow HOW portable is it ? 2And what is the weight ? 3 when will it be releasedatum 4 can peaple join a program to test it I am really looking for portable printers since i dont have a location to teach about 3d printers. So i have to bring everything with me

[@3DPrince-zd1se]

If I remember correctly, the weight of mine is around 6lbs/3kg. It fits in a filament spool box, folded is just a bit bigger than Kralyns V3

[@FullFledged2010]

Why not show how it does with things like bridge printing. That is what its designed for right?

[@3DPrince-zd1se]

We’ll showcase its print quality later. This was a quick low-budget video that I filmed in like two hours so I didn’t try very hard on the extra details😉. If you want a good idea of the print quality, check out Kralyns original video or join our discord.

[@redheadsg1]

Looks nice but that glass plate ... not good if you want to print in PETG.

[@3DPrince-zd1se]

True that, and there are several in the community including ourselves working on alternatives

[@ypyketo]

What happenned to KRALYN? Is he alive?

[@3DPrince-zd1se]

Yes! He’s just working for a company that doesn’t let him develop 3D printers anymore (through a Non-compete contract)

[@ericcxxxx]

you do know he just release v4 right?

[@3DPrince-zd1se]

Hi! There have been lots of developments since this video was released. Kralyn has not released a V4, although the user named McFazio sometimes refers to his build as the V4 :)

[@ericcxxxx]

@@3DPrince-zd1se ok i have all 3 ver now

[@kingmasterlord]

why would this dude be missing did he get hired somewhere and signed an NDA? was he some kind of threat and got taken out?

[@3DPrince-zd1se]

The first one 😅

[@kingmasterlord]

@@3DPrince-zd1se well with this Hawaii laser nonsense, the kids in walmarts at the border, the WEF tryna do digital currency so they can just turn your money off if they dont like you, cant be too sure. look how they're going after Russell Brand.

[@1fareast14]

Good video, but try to keep mentions of Kralyn more respectful. The whole intention of open-sourcing was to enable projects like this. We know a sequel will be better, but the current script makes the OG sound neglectful

[@3DPrince-zd1se]

I am a big fan of Kralyn, please don’t misunderstand 🙏. I have a lot of respect for him and he is whole reason we are even here in the first place. There are issues with the original V3, issues that Kralyn would acknowledge himself. This is not due to neglect, but to the unfortunate circumstance that Kralyn is not able to continue developing his own project. Thank you for your concern❤

[@1fareast14]

@@3DPrince-zd1se Absolutely, that's what I figured. Just a bit of tone advice is all. Good luck to your team

[@gf2e]

I don’t think the tone was intentional negative but it felt to me like it was “here are all the things that were mistakes, we are replacing them with totally different things to fix them”. It kinda sounded like the original was “let’s try these cool new elegant ideas” and it’s turned out that boring old ideas were more reliable.

[@trialfail]

$500 is still high for such a barebones look

[@3DPrince-zd1se]

While it's still in the experimental phase it's kind of unavoidable, demand needs to pick up before you can see cost reductions🤷‍♂

[@tymz-r-achangin]

We will easily pass on a printer that relies on the object's ability to stay bonded to a platform while the object is being suspended from it

[@3DPrince-zd1se]

I think you’d be surprised how infrequent this problem is when you use the proper materials and temperatures😉

[@tymz-r-achangin]

@@3DPrince-zd1se The main issue is the many attempts of doing those things until coming to the rights ones that keep the object mounted to the base. With standard 3D printers there are so many problems that are already prevented by them simply printing on top of the table

[@3DPrince-zd1se]

@@tymz-r-achangin I recognize that you have a valid theoretical concern. If you would like concrete proof of reliable performance of the Positron printers, join the discords of the V3 and LT and talk to the tens and possibly hundreds of individuals who have built and regularly use one (myself included). Thanks!

[@jasonartcraft9148]

It's a great project, and I like how it looks, BUT imagine what happens when the model falls down on the extruder. Plastic from the extruder will cover all main components and potentially destroy everything on its way. Cleaning on normal orientated printers is easy, but leaving this thing unattended will end in a disaster.

[@3DPrince-zd1se]

Print fails are generally much more mild than you are suggesting, but you’re right that a messy fail does occasionally happen. The intent of the Positron was for it to be a portable 3D printer for extra fast prototyping and iterating. This will generally lead to it being placed immediately next to the users laptop or in an otherwise close by location. That doesnt mean that you can’t leave the printer unattended, but there certainly is increased risk. Just as with any design, there are great benefits accompanied by unique challenges. We accommodate these challenges in order to reap the benefits. For a typical 3D printer, we accommodate its bulkiness by reserving large spaces and rigid tables for it. For the positron, it requires a bit more supervision.

[@jasonartcraft9148]

Portability and speed are very hard to achieve. I deeply respect that.@@3DPrince-zd1se

[@bartsimpson7399]

But Why???

[@gorin3512]

As per my understanding of original Positron - easier portability - you need to fold/dismount only z axis and bed, other parts are not touched - if order to pack it to a size of filament box. Also, lower center of mass should increase stability and lower vibrations. Positron LT based on Positron v3, so basic concept kept the same.

[@Strange_st]

this bed is definitely not readily available. it's being sold only at one place, and there it's sold out.

[@3DPrince-zd1se]

There are a few other options, just only one for the completely transparent version. There’s a decent one on aliexpress for $30: www.aliexpress.us/item/3256805397805171.html?spm=a2g0o.productlist.main.19.35be192bfbf7yC&algo_pvid=cd808996-8aa3-47c8-9291-345b9014942b&algo_exp_id=cd808996-8aa3-47c8-9291-345b9014942b-9&pdp_npi=4%40dis%21USD%2135.99%2134.91%21%21%2135.99%21%21%402101f49916946472461752852e52c2%2112000033644539402%21sea%21US%213692730700%21S&curPageLogUid=d5X6CSmC0LIp

[@ShakirovRuslan]

Wouldn't it be more honest to share the revenue from the commercial license among all the team members of original design?

[@3DPrince-zd1se]

I don’t know if “honest” is the correct word. We respect the licenses and agreements of the Positron V3 and its derivatives.

[@synthetic4]

Did everyone realize that printing supports is never necessary with this printer?

[@3DPrince-zd1se]

It might work if the filament cooled instantly 🙂 unfortunately supports are still useful for keeping the filament from sagging onto the hotend, and keeping the model rigid while cooling

[@synthetic4]

A silicone disc around the nozzle could support the filament while it cools (maybe with a layer of glass-whool for heat protection) + a strong cooling fan, and maybe it works. I can't imagine how cool a printer that needs no supports would be. @@3DPrince-zd1se

[@synthetic4]

...and also, if the filament sags a bit, it sags onto the next layer and not away from it, so there will be no loss of adhesion

[@vuongnh0607l]

resin printers print upside down too, and those still need supports. It's just not possible to print to thin air (islands).

[@synthetic4]

yes, for islands it would not work, but adding an isthmo would do it and be quicker to print and cleanup than full supports

[@AdjustinThings]

Dude those pulleys are whack. I mean, their outta whack. I mean, they aren't concentric

[@3DPrince-zd1se]

Not sure if I get what you mean... Drive pulleys are all concentric with the cutouts. Perhaps the camera angle is throwing you off

[@AdjustinThings]

@@3DPrince-zd1se 1:58 the gt2 tooth pulleys look a little off. Just slightly. Ok you got me I was being dramatic