Does anyone know the composition of the oxygen permeable membrane?
Is it a UV-transmissible siloxane window of some kind?
Carbon3D – 3D Printing via Continuous Liquid Interface Production
31–40 of 112 posts
Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production
#32The site is so cool that it just screams "fake". Cool pictures, not much copy, no details. The big difference here is that they're doing photopolymerization at the bottom of the tank, rather than at the top like everybody else. This requires a transparent material that passes oxygen on the bottom of the tank, so the action takes place on the surface of that membrane. They're vague about the details. How long does the…
> The site is so cool that it just screams "fake". They do have a video of the actual product at the bottom, which is just plain cool.
Ya, they really ought to move that to the top. It's amazing.
Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production
#33The website is pretty and the copy is tight, but it's nothing pathbreaking in terms of fundamental principles.
This is just bottom-up UV-DLP SLA with a new twist: taking fuller advantage of oxygen permeable materials for the vat to eliminate the recoating step and get to continuous printing. A similar idea was tried, the ill-fated Solidator used a pressurized vat bottom with a permeable membrane. Though from what I know Solidator was not counting on the oxygen inhibition in the same manner as Carbon3d. Solidator's problems were not related to the inhibition technology, just the standard hardware issues faced by many on KS. Other companies have similar technologies as Carbon3D in production or soon to reach the market. But a very talented team and quite the splash of a product launch.
Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production
#34Is there anything on how cheaply parts can be produced? They suggest that it could be used for production parts --presumably ones that can't be produced by other processes -- and that's great, but what about for inexpensive one-offs, whether they be hobbyists/inventors/mechanical hackers making stuff, or for things that are highly customized (say earphones that are shaped exactly to your ear).
Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production
#35The website is pretty and the copy is tight, but it's nothing pathbreaking in terms of fundamental principles. This is just bottom-up UV-DLP SLA with a new twist: taking fuller advantage of oxygen permeable materials for the vat to eliminate the recoating step and get to continuous printing. A similar idea was tried, the ill-fated Solidator used a pressurized vat bottom with a permeable membrane. Though from what I k…
The speed and smooth ascension are actually game changers imo.
Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production
#36This is going to take off like a rocket. It's genius.
Maybe some chemistry/materials engineer can figure out ahead of time how to take a polymerized object and convert it back to a usable resin. Really, we have to start analyzing the end product for recycle-ability before the tech explodes.
Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production
#37Neat. The animation/rendering of the blue and cyan particles on the page I'm sure is done by Krakatoa, a renderer I wrote. :)
Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production
#38can anyone explain why doesn't the object risk detaching from the panel that lifts it up? How is it attached to the moving part?
Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production
#39See the paper in Science released online just now: http://www.sciencemag.org/content/early/2015/03/16/science.a... It will apparently be the cover story. (Does this count as Sequoia breaking Science's embargo?): https://twitter.com/sequoia/status/577651625545748480 From the abstract: "...feature resolution below 100 micrometers. ... complex solid parts can be drawn out of the resin at rates of hundreds of millimeters…
That's fascinating but a bit out of my depth. Do you have any references that a newbie to 3d printing should look at before taking the plunge?
Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production
#40can anyone explain why doesn't the object risk detaching from the panel that lifts it up? How is it attached to the moving part?
at the bottom of the page there is a video -- it looks like they cure the resin to make a thin layer across the whole plunger/panel, at the very least there is the small layered grid that holds it on before they start "printing" the object. seems like cured resin will stick to the panel, so they just have to do some simple layered curing before they engage the actual object