some cad drawings showing one of the pulley housings for hextatic, and the semi-finished product. ideas for clanking replicators or just cheap machine tools: hexegrity and a laminated pancake motor design
me giving a demonstration of pouring aluminum into styrofoam "molds" which are vaporized and then burn off, leaving an arbitrarily shaped casting. also, a CNC foamcutter assembled from trash, and an art object it produced.
I helped build and maintain a community accessible woodworking/welding/electronics shop, and garden
I was teaching a series of workshops on AVR microcontroller programming for the IU robotics club, and we needed lots of chip programmers. So I made some, based on designs from ladyada.org and modified for easier toner transfer etching. A circuit board assembly line spontaneously formed when I brought in the spare parts one day!
papercraft with Blender, as an example of computer aided manufacturing that anyone can do