[HN Gopher] PolyDye: Full color printer mod for Marlin 3D printers
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PolyDye: Full color printer mod for Marlin 3D printers
Author : utopcell
Score : 120 points
Date : 2024-12-27 18:18 UTC (3 days ago)
(HTM) web link (github.com)
(TXT) w3m dump (github.com)
| simgt wrote:
| The images and video you're looking for are here:
| https://hackaday.com/2024/12/28/full-color-3d-printing-with-...
| slau wrote:
| In this case, the real work originated in Michael's
| TeachingTech video: https://m.youtube.com/watch?v=J1wz8S9rTI8
| Suppafly wrote:
| The real work originated with the PolyDye project.
| TeachingTech isn't a bad channel, but he mostly demonstrates
| tech invented by other people. I'm not sure I understand the
| point of commenting a link to his video that is already
| linked within the first paragraph of the linked article.
| slau wrote:
| You're absolutely right; the real credit goes to the
| PolyDye project. However, it's TeachingTech's video that
| made PolyDye explode in the last week. Hackaday is just
| regurgitating what is explained in TT's video. I guess I'm
| just a bit tired of that page, and what amounts to
| basically blog spam.
| tiku wrote:
| Very interesting step. I wonder what will become the standard for
| color 3d printing. Mixing 3 base colors in a mixing chamber
| probably will waste a lot of purge filament.
| gunalx wrote:
| Mixing filaments has been tested and wastes an enormous amount
| of filament, and has accuracy issues with color and deposition
| (like almost all regular multicolor getting clean seperstions
| or transitions is hard)
| simonjgreen wrote:
| I recall seeing a similar idea to this on a 3D printer that used
| sheets of paper for the layers. It would (workflow from memory)
| print with high saturation on to a stack of paper then drag them
| in to an aligned stack while cutting the layers out using a drag
| knife and gluing them. I wish I could recall who made the thing,
| but it was quite impressive. Main target use case was
| architectural work.
| iancmceachern wrote:
| I remember this, the coolest part was that the feedstock was
| just glue, inkjet cartridges and A4 printer paper
| simonjgreen wrote:
| This was the one:
| https://en.m.wikipedia.org/wiki/Mcor_Technologies_Ltd Seems
| they went out of business.
|
| Video here https://youtu.be/2DRJ2oUK4-E
| mk_stjames wrote:
| 3D printing via paper sheet stacks was one of the first 'rapid
| prototype' technologies. It was around in the automative
| industry at least in the mid 1980's, and was called LOM -
| Laminated Object Manufacturing. The machine I saw would unroll
| glue-backed paper onto a plate, laser-cut the layer into it
| along with laser cutting a consistent grid pattern everywhere
| outside the part. Then repeat for all the layers.
|
| This took forever (literally days for a big part) but when it
| was done you would get this giant block that felt like
| essentially a glue-up wood countertop. You would then bust away
| all the cube pieces on the outside, revealing the 3D part
| inside. The part would have this grid line pattern on it from
| where the waste cube cuts intersected the final part. You could
| then varnish the part and you'd have a pretty much rock solid,
| heavy reproduction straight from a computer model.
|
| I know that these were used for vac-forming parts straight off
| them, and also as patterns for sand castings. It was
| interesting as this tech has been pretty much erased, it's even
| hard to find pictures of it these days.
|
| Anyway. I don't ever recall ever seeing one that printed color
| onto the paper however, but I'm sure this was something that
| was experimented with.
|
| Here is a 1991 paper describing the tech, which had already
| been around for a few years by then I think:
|
| https://repositories.lib.utexas.edu/server/api/core/bitstrea...
| ricardobeat wrote:
| Impossible Objects has refined this idea by using stacks of
| printed powder onto fiber sheets. They get stacked and sintered
| into the final object, and the fiber itself acts as
| reinforcement.
|
| It makes 3D printing at massive scale possible:
| https://impossible-objects.com/3d-printers/
| 0_____0 wrote:
| That's slick! I wonder what sorts of jobs end up being cost
| effective on it. Like, how much does the media used to print
| the example job in the video cost? There's no clue on the
| website as to the cost of the media, so I'm guessing you have
| to have a pretty good reason to need this particular
| technology (simply speed?)
| iancmceachern wrote:
| This is similar to the RizeOne, I have one. Tjmhe company went
| under but they're still supported by some suppliers.
|
| https://www.dynamism.com/rize/rize-one.html?srsltid=AfmBOooo...
| tommiegannert wrote:
| That's cool, and certainly more accurate than blending filament.
|
| Anyone have data on layer adhesion?
|
| (I have a spool of Royal Blue Prusament that has the worst layer
| adhesion ever, for some reason. Fresh in my mind. :)
| slau wrote:
| If I remember correctly, Royal Blue is a PLA blend. Are you
| using that profile or just Prusament PLA? The temperatures are
| significantly different (25degC difference), and so are the
| speeds (20-30% difference).
| wtcactus wrote:
| This seems the actual future of color 3D printing. Filament
| manufacturers will develop increasingly better translucent
| filaments and 3D printer manufacturers will seamlessly integrate
| the method on the printers.
|
| I have a Bambu P1S with the multi filament upgrade, and while
| great for several motives (keeping 4 spools at hand dried and
| ready), I never use it for actual multi material printing due to
| it's slowness and wasteness.
| wkat4242 wrote:
| Yeah the AMS is a nice extra but not at all practical for most
| usecases.
|
| I use it sometimes for badges with text, you only need a few
| layer changes then which makes it ok. But big multicolour
| objects nope.
| CodeWriter23 wrote:
| Doesn't Bambu have "Purge to infill" in its Orca fork?
| wtcactus wrote:
| I never did try that. But I'm figuring out it needs a fairly
| big model (or several copies) to work properly and for the
| filament change time to be acceptable.
|
| All in all, other than completely changing filament after a
| specific layer, I don't see the shortcome outweighing the
| benefits.
|
| But in this case I've mentioned it becomes very handy. For
| instance, to print a PLA 1st layer for bead adhesion and then
| print ABS on top of it.
| nullc wrote:
| Anyone taking bets on how long until the cease and desist from
| stratasys rolls in?
| wkat4242 wrote:
| I really want this on my bambu <3
| luma wrote:
| One of the downsides to a mostly-closed system like Bambu, it
| makes adding solutions like this difficult.
| wkat4242 wrote:
| True but I mean I wish Bambu would bring something like this
| as an option :)
|
| I'm very happy with bambu. I love 3D printing but I hate
| messing with 3D printers, constantly tuning and fixing
| everything. I really despise that stuff. So bambu is perfect
| for me. I would never install such a kit anyway. I just want
| to buy a printer with it and for it to just work.
|
| I know many other people at the makerspace who love tinkering
| with their printers but it's not for me. Until I got my bambu
| printers my prints were pretty bad because I didn't put any
| effort into my printers. Always having misaligned beds etc. I
| just can't be bothered with that shit. I just used really
| thick rafts to make things slightly more manageable. They
| mostly have creality and prusa ones.
| luma wrote:
| > I wish Bambu would bring something like this as an option
|
| And that's what you're left with, wishing a company would
| meet your needs. With a Prusa, you just go ahead and add
| the thing and tinker as you wish. Modern Mk4 printers have
| all the reliability features you are familiar with from
| Bambu, with the notable exception that they aren't
| uploading your GCODE to a chinese cloud provider.
| zanderwohl wrote:
| And the notable exception that they cost 1.5x as much for
| the same capabilities.
| Agree2468 wrote:
| I would consider extendibility a capability, whether you
| consider that worth the price difference is up to you.
| nullc wrote:
| > Prusa
|
| abandoned open source for their most recent products...
| that plus the fact that bambu added lan-only-mode makes
| the purchase decision easy.
| gunalx wrote:
| The main reason not to buy bambu.
| SillyUsername wrote:
| Very steep price, for not much more you could get a Bambu A1 Mini
| and AMS
| utopcell wrote:
| $200 seems quite cheap for full-color capability. The two
| technologies are not really comparable.
| utopcell wrote:
| Great project. This seems to be bringing the technology of the
| DaVinci Color [mini] printers from XYZprinting to the OSS world.
| Those 3D printers were quite expensive.
| seltzered_ wrote:
| Is it possible to use this as an alternative 2D paper printer as
| well? Or is the position granularity too large?
|
| Asking as there's been many discussions over the years desiring
| an open source paper printer and while this would be a rather
| slow and cumbersome approach it could be useful for those who do
| 3d printing a fair amount and print to paper on rare occasions.
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