Autodesk has just released the Design files for a fully functioning stereolithography 3D Printer called 'ember'. Take a look at the promotion video below...
From the article: While this interesting printer won't be ready for market for another few months, we already know quite a lot about it. It is a high-resolution resin-based 3D printer, that relies on a DLP light engine to cure its resin (many other printers rely on laser technology). It features 10 micron layer thickness and 100 micron minimum feature size, and a (relatively small) build volume of 64 x 40 x 134mm. As the printer is intended for jewelry, dental structures and other highly detailed object, this shouldn't be too much of a problem.
Although stereolithography has been around as long as 3D printing the designs for Ember are completely open source.