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simgt
slau
In this case, the real work originated in Michael’s TeachingTech video: https://m.youtube.com/watch?v=J1wz8S9rTI8
Suppafly
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.
undersuit
>but he mostly demonstrates tech invented by other people.
In the video it's stated that the PolyDye creator is a 4 year patron(Patreon?) to TeachingTech and it's a collaboration for the demonstration.
AND the linked has changed to the PolyDye github instead of the blog spam.
slau
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.
wtcactus
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.
kamranjon
As someone who runs a small business selling niche 3d printed accessories [1] - the ability to perform multicolor printing on the first layer is really important for giving a more finished look (no layer lines). I wonder if this new method would support being able to color the bottom layer (the layer that is in direct contact with the build plate).
wtcactus
This is a really nice idea. I never thought of using it "the other way around". This is nice for tags, for instance - where we live we have this little tag we should put on our mailboxes so that we don't get publicity.
wkat4242
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
Doesn't Bambu have "Purge to infill" in its Orca fork?
PrivateButts
It can help a bit but it's not a magic bullet. You're usually not using that much plastic in infill to do a full purge, and the current implementation doesn't add more infill if there's more purge needed. Toolchangers stand to benefit the most from it since they only need to purge enough to prime the nozzle again.
There's also a side problem I've noticed with purge to infill, it's way less forgiving if your filament has too much colorant or you have your purge amounts wrong. Having a perfect print that had it's colors bleed sucks.
wtcactus
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.
simonjgreen
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.
mk_stjames
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
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
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?)
simonjgreen
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
iancmceachern
I remember this, the coolest part was that the feedstock was just glue, inkjet cartridges and A4 printer paper
iancmceachern
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...
utopcell
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.
tiku
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
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)
seltzered_
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.
tommiegannert
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
If I remember correctly, Royal Blue is a PLA blend. Are you using that profile or just Prusament PLA? The temperatures are significantly different (25°C difference), and so are the speeds (20-30% difference).
wkat4242
I really want this on my bambu <3
luma
One of the downsides to a mostly-closed system like Bambu, it makes adding solutions like this difficult.
wkat4242
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
> 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.
gunalx
The main reason not to buy bambu.
nullc
Anyone taking bets on how long until the cease and desist from stratasys rolls in?
SillyUsername
Very steep price, for not much more you could get a Bambu A1 Mini and AMS
utopcell
$200 seems quite cheap for full-color capability. The two technologies are not really comparable.
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