The stainless balls at the center of the Kolossos ST bearing only result in a friction increase of “a fraction of a watt” ...

I picked up a cheap chinese leather patcher -- a Singer 29k clone -- for some leather work because my little entry-level sewing machine is not sufficient for leather. DIY is an illness, so I decided ...

Jiwi's Machines, Jiwi and Luke explore the mechanics of pulleys, demonstrating how combining them can make lifting heavy ...