[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 ...

We’ve seen plenty of motor projects, but [Jeremy]’s DIY Tubular Linear Motor is a really neat ... section contains permanent magnets, and it slides back and forth through the center of a ...

Americans used slide rules to make calculations. 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 ...