Get flash to fully experience Pearltrees
Industrial designer and tinkerer Markus Kayser spent the better part of a year building and experimenting with two fantastic devices that harness the sun’s power in some of the world’s harshest climates. The first he calls a Sun Cutter , a low-tech light cutter that uses a large ball lens to focus the sun’s rays onto a surface that’s moved by a cam-guided system.
This DIY flatbed printer uses the new Parallax Propeller chip as the brains, this new microcontroller is very powerful and has many uses. “First step towards a homemade 3D printer.
RepRap 3D printer