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Pocket Sized Coil Gun
Pocket laser engraver.
Pocket Distance Scanner
Build a Foamcore CNC Machine
Desktop CNC Machine
Easy to build CNC Mill Stepper Motor and Driver circuits
Easy to Build Desk Top 3 Axis CNC Milling Machine
DIY 3axis CNC plotter out of old printers
Easy CNC conversion of a small mill
Dual Stator Smart Drive Wind Turbine (Tutorial)
A-35 Doomsday device
How to Make a Coaxial Air Cannon
Make a cheap 3$ Projector
How to Make Dry Ice - With a Fire Extinguisher!
RaspberryPi Powered Wearable Computer
Make a Two Bladed Pocket Knife
Uni-Directional WIFI Range Extender