Seeing as i don’t have any experience with DLP printers, i would like to know what they are talking about with the tank.
One line from the text is this:
" One of the big disadvantages of some bottom-up SLA 3D printers is their poor peeling material durability
Then they talk about having to replace the tank every couple of prints or reseal it or something.
Whats the skinny with this?
http://www.3ders.org/articles/20141114-solus-high-resolution-3d-dlp-printer-launches-on-indiegogo.html
Photoresin is basicly superglue. Not quite as reactive, but chemically nasty stuff. It will stick to nearly eveything except silicones and teflon. The bottom of most tanks is glass covered with a thing layer of Poly Dimethyl Siloxane, and only last for a few dozen prints until it needs to be replaced by recoating the glass. Others use teflon tape or film, but there is a chance of the resin getting under it due to tank assembly mistakes, construction, or design issues.
DLP printers “print” by selectively curing a liquid in a tank. Think of it as a tank of jello, but instead of a mould, two lasers intersect at a point causing that point to harden. Then the liquid jello is poured out leaving only the hardened bits.
This scene from Small Soldiers shows one in action: https://www.youtube.com/watch?v=L2LrCefg6cg
Like Daniel said the resin will stick to nearly everything, even including nonstick silicones (PDMS) and teflon. In the case of PDMS and even teflon to an extent it is also a little bit of a fragile surface so they do wear with each layer separation. PDMS is replaceable though, and if you have multiple vats and re-pour the surface yourself you can minimize the annoyance. Newer PDMS formulations and flex vats etc. should reduce the speed of wear.
Thanks for the answers, i now know.
Wow. Really about as simple as you can make it.