Dual Z-Belt Tensioner

thingiverse

This thingamajig tensions the sloppy dual z-belt while keeping the z-rods aligned and absolutely straight. The roller is a 608 (skateboard) bearing, since it was all the hardware I had at hands at the moment. It's a fixed tension distance of 40 mm from the top gantry. Eventually I will (might) make a slicker version with a proper 2GT-20 pully that's adjustable but for now it does it's job well. Instructions: 1 x "Belt tensioner Body.stl" laying on it's side 2 x "Belt tensioner Bearing Hub.stl" as is Insert the two hubs into the body with some pliers. It's a good friction fit so no glue is needed.Then put the slot around the inner belt, wiggle the 608 bearing in place with mild force and snap it in place on the top gantry. You might have to adjust the position of the timing pulleys to have it all aligned. This is the final detail for my quest to eliminate z-wobble on the Artillery Sidewinder X1. After following the excellent guide from 3dprintbeginner, https://3dprintbeginner.com/artillery-sidewinder-x1-calibration-guide/ and finally getting it after watching the equally excellent and informativ video from OsLee540i, https://www.youtube.com/watch?v=3DS2UCn-jnI (although in a funky Germanic accent, Bavarian?) my prints are now flawless. Yeay!!! Cudos to them both.