Piper 2 Bearing-less Short Gantries (PTFE Sliders) - 8mm, 10mm, and 12mm rods versions

This is a bearing-less version of the Piper 2's gantries, using common 2 or 3mm OD PTFE (Teflon) tubes as sliders.

The problem with steel linear rods is that they are very heavy and the problem with using any other kind of rod is that the linear bearings will chew soft metals/composites like gum. The concept behind this design is simple; it reduces the number of required parts to build the printer and also allows the use of light guiding rods (aluminum, carbon fiber, etc.). Therefore, these