[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 ...

or ball bearing slides. Ball slide stages are simply ball slides coupled with a drive mechanism. The result is a very smooth linear motion, accurately controlled by rotation of the drive mechanism.

Dovetail slides ... bearing slides), the force required to move the saddle is greater than other systems resulting in slower acceleration rates. These devices, in turn, need functional drivers or ...