True Mirror
See yourself as others see you with a true mirror.
Posted by Charles Platt
Categories: Science | No Comments
Epoxy glue Projects
The Bobbinator
Linear actuators are motors that work in a straight line. They’re very useful for controlling valves and levers, building robots, and retrofitting old mechanisms for digital control. The simplest form...
Posted by Andrew Lewis
Categories: Electronics | No Comments
The Fire Piston
Carl von Linde was dead tired. The eminent engineer, considered the father of the modern refrigerator, had just returned to his home in Germany from a lecture tour that took...
Posted by William Gurstelle
Categories: Science, Tools | No Comments
Bundle Bow and Arrow
By Kathreen Ricketson, Rob Shugg, and Orlando Shugg As a boy, my partner Rob Shugg always had a bow and arrow. He was quite a little ragamuffin and had a...
Posted by Kathreen Ricketson
Categories: Craft, Fun & Games, Woodworking | No Comments
Chladni Plate
Use a broken speaker, bits of wire, and tape to prepare a coneless voice coil driver, then use it to generate standing waves on a sheet of metal, making sound...
Posted by Edwin Wise
