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Carbon3D – 3D Printing via Continuous Liquid Interface Production

carbon3d.com

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Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production

#41

Post by sova »

allending wrote: post #39
8dad6bea wrote: post #24

See 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?

it's like a laser printer but instead of toner it uses gooey resin. project (in UV light) a shape on the bottom of the goop and it will start to solidify in that shape (once it touches oxygen)... so gently pulling some solid surface goop out gets you to the point where you can "print" stuff! Pretty cool! It's not clear to me if the resin solidifies only on contact with UV light and the oxygen level is controlled from below or above, but at any rate the balance of UV light (in a particular projected design) and oxygen is what makes this possible.

Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production

#42

Post by cma »

drabiega wrote: post #6

Unless I'm missing something, this is not exactly a new technology. http://makezine.com/2014/07/26/droplit-the-low-cost-diy-resi... http://www.instructables.com/id/DIY-high-resolution-3D-DLP-p... http://www.3ders.org/articles/20120911-a-list-of-diy-high-re...

SLA is layered, each layer a knife sweeps over it and refills and smooths the uncured resin layer. This is submerged, so drawing the parts upwards pulls in more fluid automatically so everything can be run continuously. What I don't get is that, hydraulically most of the liquid pulled in is going to come from the oxygenated layer. But I'm guessing that reacts with the resin and neutralizes quickly when it is too far from the diffusion membrane that provides the source of new oxygen.

Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production

#43

Post by huuu »

vortico wrote: post #29
sdrothrock wrote: post #21

Earlier quoted context omitted.

> 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.

I don't know much about 3D printing, but that's the most futuristic video I've seen this decade. It looks like it could just pull a coffee mug or whatever out of nothing and serve it.

If you like this search for "stereolithography" on YouTube ;)

Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production

#44

Post by brador »

FrankenPC wrote: post #36

This 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.

Agreed. This is more like what I want from 3D printing. The smelly ABS 3D printers were never really suitable for indoor use, but this I can see myself using!

Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production

#45

Post by universaltest »

iamwil wrote: post #23
drabiega wrote: post #6

Unless I'm missing something, this is not exactly a new technology. http://makezine.com/2014/07/26/droplit-the-low-cost-diy-resi... http://www.instructables.com/id/DIY-high-resolution-3D-DLP-p... http://www.3ders.org/articles/20120911-a-list-of-diy-high-re...

You are. Using UV to cure photo-sensitive resin isn't the innovation, it's using the oxygen permeable membrane. If you look at the Form 1 printer or the B9Creator, there's a mechanical step between every layer where it needs to actuate the platform in order to loosen the resin from the projection window, so it can build the next layer. In the Form 1, it peels the print off, and the B9Creator slides a window. (look fo…

Thanks for clearing that up. I was going to ask how this differs from the form 1 which, at first glance, seemed like the same concept.

Is the oxygen permeability what keeps the printed object from adhering to the membrane?

Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production

#46

Post by ObviousScience »

universaltest wrote: post #45
iamwil wrote: post #23

Earlier quoted context omitted.

You are. Using UV to cure photo-sensitive resin isn't the innovation, it's using the oxygen permeable membrane. If you look at the Form 1 printer or the B9Creator, there's a mechanical step between every layer where it needs to actuate the platform in order to loosen the resin from the projection window, so it can build the next layer. In the Form 1, it peels the print off, and the B9Creator slides a window. (look fo…

Thanks for clearing that up. I was going to ask how this differs from the form 1 which, at first glance, seemed like the same concept. Is the oxygen permeability what keeps the printed object from adhering to the membrane?

The oxygen inhibits the curing, so it only begins to cure ~20um above the membrane, which means that it never sticks, since it never touches the window, and that can just continually pull it upwards.

Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production

#47

Post by mark_integerdsv »

What is the precision and how small can an object be? How small can the printer be? Can we make nanoprinters that are controlled from the cloud to mutate the models they create as necessary?

Nanovaccines that can change in response to mutating threats...

I feel like I have understood the importance of 3D printing for the very first time which makes sense, I have tended to be a little slow.

Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production

#49

Post by doczoidberg »

Printing from top to down from a plate is a much better approach because it works faster. The whole layer can then cure instead of only a single point. This seems to be the main difference to conventional 3d printers.

The website is inaccurate in some aspects but this new top down approach could change the 3D printing industry. Maybe it could also make 3d printers cheaper because less mechanical parts are needed.

Re: Carbon3D – 3D Printing via Continuous Liquid Interface Production

#50

Post by booli »

Continuous is kind of a misleading marketing term isn't it? If it projected, it is in frames. Just like that the upward movement is in frames / steps. In essence the resolution is still as high as the resolution of the step motors moving the build plate up and it's layer by layer.

Not arguing that it is not a cool technique, just saying that they marketing it again with bogus wording.

I've seen many FDM printers do continuous, albeit vase-like, prints. Shall we market them as Continuous Filament Fuser?

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