BIGTREETECH Dual Z-axis Ender-3 kit FIX
thingiverse
I bought this kit from Banggood: [Dual Z-axis Ender-3 Upgrade Kit with Single Stepper Motor](https://www.banggood.com/Dual-Z-axis-Creality-3D-Ender-3-Version-Upgrade-Kit-with-Single-Stepper-Motor-Dual-Z-Tension-Pulley-Set-p-1617973.html) One of the pulleys in kit was defective, so I had to print one myself (ended up printing both pulleys). I increased number of teeth from 20 to 22 to get rid of belt tensioner (belt included in the kit was GT2-616) Also I printed spacers for bearings to work smoothly.
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