Anti Z Banding

thingiverse

UPDATE 30-5-17 Added Anet A8 version with four screw holes positioned exactly where they belong. These mounts revolutionize the way your gantry attaches to the Z axis - or rather, doesn't attach at all! That's why this design works so well. Most Z banding is caused by bent or misaligned lead screws/threaded rods. By removing the gantry from the Z axis and using gravity to hold it in place (which is more than enough), you're disconnecting the gantry in both the X and Y planes. This allows the threads/lead screws to oscillate freely, without imparting that motion into the gantry or your print. The files attached are for 3-hole Z-axis nuts. Version 2 uses a 4mm piece of PTFE tubing/rod to reduce friction (as seen in the included pictures). Since many users have four-hole nuts or hex nuts as their lead nut, I've included the SketchUp file, allowing you to edit it to your liking. How This Was Designed This design was created using SketchUp.