We’ve seen plenty of motor projects, but [Jeremy]’s DIY Tubular Linear Motor is a really neat variety of stepper motor in a ...

[Andy Pugh] found himself in need of a large linear slide, so he resorted to making his own with steel square tubing and a bit of PTFE (Teflon). The PTFE slider/spacers [Andy] needed a compact ...

Slide rules are analog computing devices marked with linear or logarithmic scales, some on a moving slide and some stationary on the base of the instrument, so that two numbers may be added or ...