Search found 20 matches

by pizzaslice
Fri Feb 01, 2019 10:09 am
Forum: Commerical Machines
Topic: Carbon 3D
Replies: 243
Views: 204327

Re: Carbon 3D

Got some good news, developed a new optical head for photopolymer processing. Think I can circum vent the CLIP patent, see https://reprap.org/wiki/Transparent_Polygon_Scanning . A video of the scanner can be seen here; https://www.youtube.com/watch?v=SofTXG5s_MA A link of details are here; https://h...
by pizzaslice
Thu Dec 21, 2017 6:52 am
Forum: Commerical Machines
Topic: Carbon 3D
Replies: 243
Views: 204327

Re: Carbon 3D

Hey Hughes, 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 ...
by pizzaslice
Wed Apr 26, 2017 9:52 am
Forum: Commerical Machines
Topic: Hexastorm: an open-hardware laser scanner
Replies: 1
Views: 5562

Hexastorm: an open-hardware laser scanner

Technology: laser scanner using a transparent polygon with a single bundle Company: Hexastorm Scan spot speed: 100 to 467 meters per second. Spot size: 60 micrometers Scientific Article: http://reprap.org/wiki/Transparent_polygon_scanner Abstract: The key invention is that Hexastorm is able to achi...
by pizzaslice
Sat Mar 21, 2015 6:26 am
Forum: Commerical Machines
Topic: Carbon 3D
Replies: 243
Views: 204327

Re: Carbon 3D

I can imagine the following difficulties with focussing below the surface; a Gaussian beam is in focus in a range known as the Rayleigh range; for a 20 micron spot, at 405 nm this is in the order of a couple of mm. so for to be out of focus on the surface you would have to focuss 1 cm below the surf...
by pizzaslice
Thu Mar 19, 2015 5:20 am
Forum: Commerical Machines
Topic: Carbon 3D
Replies: 243
Views: 204327

Re: Carbon 3D

Oxygen Permeability: Teflon FA1600 340 Barrers Teflon FA2400 990 Barrers Silpuran 375 Barrers for 50 micrometer sheet "green bar in the graph" Optical Transmission: Teflon FA, see graph posted earlier Silpuran, "transparent similar to other silicone rubbers", as silicone is good ...
by pizzaslice
Wed Mar 18, 2015 11:27 am
Forum: Commerical Machines
Topic: Carbon 3D
Replies: 243
Views: 204327

Re: Carbon 3D

What is interesting to note is that the speed of the carbon 3d printer is not uniform, you can see it clearly in video https://www.youtube.com/watch?v=VTJq9Z5g4Jk .
It is much slower in the layers where it has to cure a lo of fluid which is in contact with each other.
by pizzaslice
Wed Mar 18, 2015 9:23 am
Forum: Commerical Machines
Topic: Carbon 3D
Replies: 243
Views: 204327

Re: Carbon 3D

I have thought about it for some time. If you put resin in contact with air and illuminate from the top with a beamer you should be able to study this deadzone effect which enables this CLIP technology. As it is in direct contact with air, you can also state that you are illuminating resin with a su...
by pizzaslice
Wed Mar 18, 2015 5:53 am
Forum: Commerical Machines
Topic: Carbon 3D
Replies: 243
Views: 204327

Re: Carbon 3D

Sources: Biogeneral: length continuous, width 80 mm thickness between 30 micrometer and 100 micrometers, price is $240 per 100 mm (85 mm wide), thickness of 0.055 mm and 0.080 mm are available. Random Technologies: order constraints unknown, prices unknown, DIY Approaches; http://ntrs.nasa.gov/archi...
by pizzaslice
Tue Mar 17, 2015 3:51 pm
Forum: Commerical Machines
Topic: Carbon 3D
Replies: 243
Views: 204327

Re: Carbon 3D

Phife can you give a more detailed estimate based on your inquiry!? I am curious.