Adjustable 2020 PTFE Slider

thingiverse

I wanted to make a slider you can Print that will work on almost all types of 20x20 Aluminium profiles. It uses 4mm PTFE bowden tubing as the material in contact with the aluminum profile. It makes contact in 8 places (4 on each end). The screws at the end adjust the pressure of the bowden tubes against the profile, by using ramps. You have to adjust the screws to find a compromise between a wiggle free slider and friction. The nature of the design requires pieces of bowden tubing of equal length and benefit from a tube with a V-Cutout at the end. I have included a part for trimming the tube using a sharp tool, for example a wood chisel. To make sure the Part in the core doesn't move compared to the outer part, I used some bowden Tubing mounted in groves. This isn't needed for the entire length, just some in the back and some in the front. I might use this for a z-axis as it might have to much friction for a x or y-axis. Also it should shed some weight for using it as a x- or y-axis It needs only a little bit of hardware to assemble. I used: 4x 6mm M3 screws 4x M3 brass inserts 2x 30mm M3 screws 2x M3 nuts and around 1/2 m of 4mm bowden tubing https://youtu.be/Ip-m8CrN1Gghttps://youtu.be/_uY8gKPPfKs Print Settings Printer: Prusa i3 MK2 Rafts: No Supports: No Resolution: 0,25 Notes: I printed it in ABS I scaled my model up to 1,02 the original size. In retrospect I would not scale up the inner part. only the outside. I didn't use infill but used 2mm wall thickness. Post-Printing I sanded down the inner part so it would fit better and so it would slide easier inside the other Part. If I hadn't printed it at 1,02 scale that might not have been necessary.