Lukas Hoppe made this tutorial and designed components that can be 3d printed or lasercut to make cheap DIY linear actuators. It is a set of brackets and endblocks to mount NEMA 17 (or other motors with adapters) motors on linear rails. The result look good.
You can always rely on that German engineering. Gut gemacht Lukas! Danke fur dieses projekt.
Guide and all STL files can be found at:
http://www.instructables.com/id/Low-cost-linear-actuator/?ALLSTEPS
