CR-10 V2 Z-Axis Timing Belt Tensioner

thingiverse

When disabling the stepper motors and manually leveling I noticed the X axis rail could come out of level since the Z axis stepper lead screw would turn on one side but not the other. A timing belt may prevent this. I also believe this may sync the two Z motors "slightly" more than stock possibly providing more even layers. For the new Z mounting blocks that give room for a pulley I used FattyGuyRiley's design since they don't cost you any Z height: https://www.thingiverse.com/thing:3504265 I could not find a simple belt tensioner that fits FattyGuyRiley's belt height so I sketched this up in Sketchup. You will need: - 4 X M3 T-nut which you can find here: https://www.thingiverse.com/thing:3050607 - 4 X M3x8 screws - 1 X M4X20 (or 30) screw - 12 X M3 washers (unless you resize the thickness of the tensioner bracket) - 4 X M3 nuts - 2 X GT2 Timing Belt Pulley (20T, 8B): https://amzn.to/2t7D9eo - 1 X GT2 Toothless Timing Belt Idler: https://amzn.to/2NxzCxh - 1 X GT2 760mm-2GT-6mm 380 Teeth Timing Belt: https://amzn.to/2uFYBI1 There is some adjustability of this tensioner if you use this size belt and pullies When it's all together make sure your Z screws still have some front and back movement in the bearings and nothing it too tight to the point of binding (Very important) ***** WARNING: the loosest "setting" is still tight for some belts. You may want to shorten the reach of the tensioner bracket for your use ********