Search found 75 matches
- Wed Mar 18, 2015 7:45 am
- Forum: Commerical Machines
- Topic: Carbon 3D
- Replies: 243
- Views: 559245
Re: Carbon 3D
I would guess that 0.5mm was what it took for the fep to "comletely peel off". To test continuous printing on regular tensioned fep, it would be much easier to try a simple 10x10x10 cube. Set everything to 0 in CW and put layer thickness to 10mm which is the height of the cube. Some manual...
- Wed Mar 18, 2015 6:55 am
- Forum: Commerical Machines
- Topic: Carbon 3D
- Replies: 243
- Views: 559245
Re: Carbon 3D
CW uses blank command after the slice, as far as I understand? And a 1600ms built in delay after the retract.
- Wed Mar 18, 2015 6:26 am
- Forum: Commerical Machines
- Topic: Carbon 3D
- Replies: 243
- Views: 559245
Re: Carbon 3D
Thanks for the info. A spinning apparatus would not be that hard to build today. I mean, with an arduino and a stepper motor you could even program it for that specific recipe. Heating it in vacuum under 3atm pressure also not a problem. But I wonder if nasa over-engineered it. Because they need it ...
- Wed Mar 18, 2015 5:26 am
- Forum: Commerical Machines
- Topic: Carbon 3D
- Replies: 243
- Views: 559245
Re: carbon 3D
Info for making Teflon AF sheet: http://www2.dupont.com/KIV/zh_CN/assets/downloads/DuPont_Teflon_AF_Processing_and_Use_K26986_H44015.pdf Research quantities of Teflon® AF resin in solution come in 100 mL packages, see http://www2.dupont.com/Teflon_Industrial/en_US/store/teflon_af_home.html Price pe...
- Wed Mar 18, 2015 2:39 am
- Forum: Commerical Machines
- Topic: Carbon 3D
- Replies: 243
- Views: 559245
Re: Carbon 3D
I think we can disregard the thickness value because: 1) permeability actually goes up with less thickness 2) it's not a linear change, but a logarithmic one 3) doesn't really matter to us 1mm thick or 0.00125mm, just how many cm3 per day and fep is 1 cm3 per day, and Teflon Fa is over 800,000 and m...
- Tue Mar 17, 2015 8:20 pm
- Forum: Display Devices
- Topic: Monochrome LCD SLA 3D Printer.
- Replies: 19
- Views: 93254
Re: Monochrome LCD SLA 3D Printer.
Grayscale lcd info will get buried in here if we start from the basics and go over everything. Too much for one thread.
You might want to leave this one for "how to get a grayscale panel working on a pc" stuff...
You might want to leave this one for "how to get a grayscale panel working on a pc" stuff...
- Tue Mar 17, 2015 5:33 pm
- Forum: Commerical Machines
- Topic: Carbon 3D
- Replies: 243
- Views: 559245
Re: Carbon 3D
Here's something else: In the patent it says that the membrane/vat floor/ should have oxygen permeability of at least 10 Barrers. Definition of a Barer: http://en.wikipedia.org/wiki/Barrer basically the volume of gas going through a square centimeter of a membrane in one day. I get kind of lost afte...
- Tue Mar 17, 2015 4:27 pm
- Forum: General
- Topic: New ultra fast printing process
- Replies: 1
- Views: 5999
- Tue Mar 17, 2015 11:40 am
- Forum: Display Devices
- Topic: Monochrome LCD SLA 3D Printer.
- Replies: 19
- Views: 93254
Re: Monochrome LCD SLA 3D Printer.
Hold on, my mind is still blowing up by this Teflon FA stuff :D I'm doing some UV led placement drawings about light dispersion angles and distance from the lcd, so I'll put in my part soon. But if we could get a cheaper grayscale solution, bundeled with the Teflon FA tensionVat, that would be the j...
- Tue Mar 17, 2015 11:37 am
- Forum: Display Devices
- Topic: LCD Based 3D Printer - Introduction
- Replies: 220
- Views: 408801
Re: LCD Based 3D Printer - Introduction
3d printing learning curve is a steep one indeed