Tronxy x5s Z Axis Sync Pulley setup

thingiverse

First, big thanks to Donald Craig Yaremko for designing the pulley for this and to Eric Jorgensen on the FB Tronxy x5s printer forum for coming up with the pulley and belt sizes. Syncing 2 z axis steppers isn't always easy. This thing is a set of files you can use to print pulleys that mount over the current z screw couplers which keeps your z height the same (no loss) and includes a set of parts for a belt tensioner that mounts directly to one of your z steppers on the stock nema bolt holes with 3mm screws. In addition to 3mm set screws, 3mmx10mm screws for mounting the tensioner, you'll need a 608 size bearing and a GT2 closed loop belt 1140mm long. These can be had on amazon cheap. Pics show aluminum pulleys which are also an option but not necessary. Recommend 50% or better on infill and print the parts with threads in normal or fine if you are using cura, (1.5mm or finer layer height). The pulleys should align to and bolt directly into the current 90 degree holes on the upper part of the coupler (the sprung part). don't over tighten the belt tension, it's not a guitar string!