Reverse Stereolithography Production

Hi
after seeing a video about a reverse Production prozess i did some scratches to build a new kind of 3d-Printer

The Idea:
Stereolithography like in [www.youtube.com]
but the direction is reversed, i want to produce from the top to the bottom(the item is pulled up while producing), so i can produce without flattening the fluid after each layer

3 Layer Underground (which is a fluid container)
from top to bottom:
1. The bed is filled with a UVstabilizing Polymere
2. Unter this there is a translusent Fluid which is heavier than the Polymere and does not mix up with it
3. Than comes optical grade laser Glass.

some air :-)

5. high speed shutter and 2 dlp-optics for laser allocating (x-y)
6. Laser (always on is the best option i think)

The key is in the fluid below the UV-Polymere somehow it must be like quicksilver drops with a very high surface tension, but translucent.
may someone chemicalguy/woman :-) can help me out here

in the case everything chemical things are cleared out, i will begin in 3d-constructing such a 3d printer with standard rep rap parts, so its easy to rebuild without doing everything new.

greets djmad

sketchup

Quite possible. If you exchange this heavy fluid with something more rigid, like silicone, and the laser thing with a projector, you get about this: [www.youtube.com]

As with all Stereolithography variants, creation of this thin film for the next layer is crucial. If you get this right, you'll have success.

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Generation 7 Electronics	Teacup Firmware	RepRap DIY

Thx silicon is a good idea

thinking about moving the polimermedia all the time is good to get constant results