9066Re: [diy_3d_printing_and_fabrication] Desktop 3D printer claims speed record
- Dec 24, 2013Maybe a couple of Pico projectors? Sounds like a lot of trouble just to save space. Having to align 2 projectors and have software that will split the image across 2 projectors? Dunno about that. They also claimed "no tilt, no sliding" so floating is a strong possibility. Maybe they are using a thin layer of oil or something else "resin-friendly" (and heavier) to coat the vat bottom. You don't need much to do the trick. A generous bed of salt water or similar might be too sloshy to float the resin on.
A thin layer of "something" might actually work really well, as long as it's clear and flat as not to distort the projection. But if it's thin enough, the distortion would be minimal. But then, you gotta wonder about the threshold between the "mystery substance" and the resin. Will they separate cleanly? Will any stick to the part? All interesting questions.
JonFrom my experiments super hydrophobic surfaces do not work with resin, in fact they are resin philic. Floating on a fluid is certainly possible. Can't see space for sliding, perhaps it is tilt and they want to keep it quiet ;)Resolution is 0.25mm x and y, 0.1mm layer.The projector is confusing, must be folded mirrors I guess, perhaps two projectors each with a mirror.Graham
On 24 Dec 2013, at 17:49, Jon Watson <jon@...> wrote:
If they don't use tilt or slide, they must have found a super hydrophobic surface coating that is optically clear. OR - they're floating the resin on top of another liquid. (It's like they're kind of "hinting" to that in the video when they drop the colored resin into the liquid)
I can't think of any other way they are keeping the "stick" to a minimum.
They never mention the resolution of the projector. You can also see that the printed objects do not have a very good XY resolution. They mention that the part resolution is about the same resolution as a monitor, which would only be about 100dpi - not that great!
Also, I can't figure out where they put the projector?! Are they mounting it on the back, facing downward, bouncing the image off a couple mirrors? How can they get a projection 8.5 x x11" from inside the box? Baffling to say the least.
I think they just lift it up from the liquid surface.. At least it looks like that in the video..
Yes it is possible.
Personally thought the lack of technical detail puts me off, I'd like to know how they are doing the release from the vat bottom.
On Tue, Dec 24, 2013 at 9:35 AM, Fortino Tan <jolly_craft@...>wrote:
Is it possible to do this, Solidify resin with visible light within 10 secs?
any over claim from manufacture?
A start-up in Florida has developed a 3D desktop printer which it claims has one of the highest 3D printing-speeds available.
Thecompany tangible engineering USA has developed the 3D printer called Solidator to use stereolithography and projector DLP-technology to turn liquid plastic (similar to nail polish) into a solid 3D object with just visible light.
Tangibleengineering USA 3D printer
The3D object is created layer by layer upside down. Solidator is capable of creating a single layer of an object at a 100 micron resolution in just 10 seconds independent of object shape or number of objects placed on the build platform.
“Thisway Solidator can create six Eiffel Towers at 20 cm height (7.9-inch) in only 5.5 hours,” said the company.
“Thepatent-pending design using DLP stereolithography technology provides high resolution on a large print bed and allows you to create 3D objects in a fraction of the time – right on your desk.”, said Tim Fischer, president & CEO of tangible engineering USA.
Thecompany is launching the product today on Kickstarter.com.
Theprinter features a 280x210x200 mm build volume. The resolution achievable allows it to create 3D Voxels with a size of 0.27 mm by 0.27 mm with a 0.1 mm layer height.
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