The use of plastic gears is limited, largely because it takes special expertise to design them properly. Too, many engineers deal with gears so infrequently, The use of plastic gears is limited, ...

This article was updated March 6, 2023. It was originally published Aug. 1, 2001. Gears—even plastic ones—need to be lubricated if engineers are going to coax the best performance out of them. In the ...

Makers, engineers and hobbyists who would like to automatically manufacture a variety of different size plastic gears you might be interested in a unique machine built using a little Arduino hardware, ...