The majority of the technical information is hosted on the above howto wiki.
A UV sensitive monomer is used for three-dimensional printing called microstereo lithography. Using a DLP video projector with a UV output, it is able to create incredibly thin polymer layers and build objects layer by layer. The initial design will have movement for building vat grown models in the z-axis only.
This design already works in a laboratory environment with lab grade equipment. The object of this design is to offer a GPL open hardware howto that anyone with opposable thumbs and moderate thinking abilities might reproduce in the privacy of their own parents basement.
IRC Freenode #3dprinters
The next generation UV Photopolymer DLP 3D Printer project will be laser based and be capable of printing submicron features for the microfabrication of very small micro-machines and mechanisms.
Several resins are available in various chemistries from under $40 to $200/L ($40-200/Kg), since DIY for polymers is not realistic due to various governmental restrictions on purchase and shipments of some raw materials. Cure rates will be possible under 0.2 seconds per layer or slice. This will allow for build rates over 1 inch per minute.
Bucktown Polymers For UV and visible light cured polymers. Several chemistries are available in Cyan, Magenta, Yellow, Black and White. The viscosity of these photopolymers may be varied greatly by controlling their temperature while printing. A heated vat is necessary for a low viscosity. A runaway heater safety circuit is strongly recommended to avoid fire or overheating.
Open Source Visible Light Photopolymer LCD 3D Printer
Open Source http://en.wikipedia.org/wiki/Open_source
Visible Light http://en.wikipedia.org/wiki/Visible_spectrum
3D Printer or 3DP http://en.wikipedia.org/wiki/3d_printer
The initial design will have movement for building vat grown models in the z-axis only using a LCD.
Several resins will be available in various chemistries from under $40 to $200/L, since DIY for polymers is not realistic due to various governmental restrictions on purchase and shipments of some raw materials