Results are attached;
Statistics: Posted by pizzaslice — Fri Feb 01, 2019 10:19 am
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A video of the scanner can be seen here; https://www.youtube.com/watch?v=SofTXG5s_MA
A link of details are here;
https://hackaday.io/project/21933-open- ... er/details
#FORMLABS, #ENVISIONTEC #CARBON --> HEXASTORM IS COMING TO TOWN
Statistics: Posted by pizzaslice — Fri Feb 01, 2019 10:09 am
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https://envisiontec.com/3d-printers/ind ... -printers/
Statistics: Posted by goldi80 — Mon Aug 20, 2018 3:11 am
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Statistics: Posted by shawnowl — Thu Jan 04, 2018 3:25 am
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Statistics: Posted by shawnowl — Thu Jan 04, 2018 3:19 am
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I have actually seen Joe de Simone present his company at Hello Tomorrow in Paris. I believe it is not wise to create a printer with Teflon AF and a DMD light engine. The main problem is that you are under patent. You wouldn't be able to sell your machine and most likely it is much more cost effective to buy Carbon's machine when it comes out.
You could try to get the same result with a different combination of layer and light engine. I have been thinking of using Teflon AF and a transparent polygon scanner.
In CLIP, the part concurrently advances away from the DMD projection which minimizes stair stepping and enables the production of flexible parts. With a transparent polygon scanner, the refresh rate is so much higher that it might be possible to keep the part static. If the part is kept static and the pixel information is rapidly altered, an exposure area of fluid, typically a polyurethane, can be modified as it grows towards the Teflon AF. Before the light solidifies the so called "deadzone", the scanner moves to the next area or pixel. Another option, would be to expose a full scan line multiple times and alter it as it grows toward the Teflon AF. Before the line solidifies, the so called "deadzone", the scanner moves to the next line. Finally, a combination of the above i.e. exposing a line multiple times and changing the pixel information might be option. Some more information on coating are outlined here recoating.
These strategies should can be used to go round the patent. I would explore these if you have the time. At the moment, I am working on the transparent polygon scanner.
Statistics: Posted by pizzaslice — Thu Dec 21, 2017 6:52 am
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https://www.customprototypes.com/
Statistics: Posted by 3D_Prototype — Thu Dec 07, 2017 1:59 pm
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Thank you for your interest in SPRYBUILD.
Here is an explanation video of how CPWC (Continuous Production with Wavefront Converting) technology works:
https://vimeo.com/231776136
Best,
Statistics: Posted by Sprybuild — Wed Oct 18, 2017 4:09 pm
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A hologram would be one way and is probably what their patent or patent application is referring to as a preferred embodiment. Note, I didn't see a patent or a patent application nor did I search for one, I'm simply assuming. A hologram would be one way but a simpler way and most likely what they are doing with their current machine since it doesn't appear that they are using coherent laser light, which is necessary to readily produce a hologram, would be to use a microlens array. Imagine a glass sphere. A glass sphere would have a very short focal length. Imagine the light going through the sphere and coming to a focal point a short distance from the surface of the sphere. After the rays of light pass through the focal point, they then diverge outwardly into a cone shape again. So, think of a glass sphere and the light coming out of it is in the shape of an hourglass. So, the focal point would be at the bottom surface of the resin tank. Now just imagine an array of microscopic spheres.
If that's what they're doing then it's a clever idea, however, they would still have the same problem as Carbon's CLIP technology of liquid resin transport. To expand on that, I'm talking about how, yes, they can print very rapidly when printing something like a 3D lattice because the resin doesn't' need to move very far to supply the forming part geometry. However, if they try to print something like a solid block that is the size of the XY build area they are going to be printing at the nearly the same speed as everyone else using SLA based methods and that is because the resin needs to travel from the outer edge to the center and that slows things down dramatically when printing large solid parts.
If you want to print extremely fast using SLA based methods think of a way to replenish the resin very quickly all over the build tank area. That is the key to success when factoring in all types of part geometry.
Statistics: Posted by James — Thu Sep 28, 2017 5:22 am
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Seems interesting.
If anyone can translate their explanation "based on the transformation of the wave front of actinic radiation, which forms the product's projection directly in the region of construction: on the border of the photopolymer - the optical interface." into something understandable that would be nice.
Statistics: Posted by Fridolin — Wed Sep 27, 2017 8:32 am
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(sped up video)
STL Files:
Build Guide:
Statistics: Posted by wallride — Sun Jul 02, 2017 5:08 pm
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Only came across this forum today as i'm really interested in building a 3d Printer.
Is this topic still active as nothing has been posted since December. Read all 240 posts and some great information. Has anyone made any progress on a supplier for Teflon AF2400 or a similar product?
Cheers
Mick
Statistics: Posted by hughes674 — Sat Jun 17, 2017 9:52 am
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Any feedback and comments are welcome!
Thanks.
Yun
Statistics: Posted by cooly — Thu May 11, 2017 10:43 am
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