I recently collaborated on the development of the ATOM 3D printer by AltDesign in Taipei, Taiwan. The delta 3D printer was recently succesfully crowdfunded and is now in production.
I have been interested in rapid prototyping my ideas for a while, and I decided to build a low cost 3D printer in 2011 based on the reprap project. Here is a preview of the build process.
Reprap is a low cost open source rapid prototyping system that is capable of producing its own parts and can therefore be replicated easily. 
DIY 3D Printer
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DIY 3D Printer

Home made 3D printer
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