We don't really need a physical wall clock anymore these days when we have the convenience of checking our phones, wristwatches or having the time displayed on the kitchen appliances. But rather than ...

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 ...