When you think of making something using a lathe, you usually think of turning a screw, a table leg, or a toothpick. [Uri Tuchman] had a different idea. He wanted to make a clock out of the gears used ...

When a knife is ground, the grinding belt leaves scratches perpendicular to the knife’s blade. A mark of a handmade knife is ...

Many mechanical devices run on gears. Even the most reliable electric vehicles have simple gears that transmit motor torque to the wheels. However, the constant friction gears experience due to their ...