Y Axis Idler Support - Thing-O-Matic - 16T or 20T idler
thingiverse
I've modified the design to accommodate a longer bolt and now it also accepts either a 16-tooth or a 20-tooth idler pulley, which are easier to find these days. There's another untested version with a support underneath to elevate the idler. I'll update the dimensions later and post again once they're fixed.
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