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DIY Electron Accelerator: A Cathode Ray Tube in a Wine Bottle
Control anything remotely with Infrared signals.
Making A Fridge Compressor Into A Vacuum Pump
A better vacuum chamber
Diffusion Vacuum Pump
$20 CNC Machine
DIY CNC Safety guide
DeltaTrix 3D Printer
Building a CNC router
Easy to build CNC Mill Stepper Motor and Driver circuits