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60 tooth/groove L type timing belt pulley
This pulley fits a standard type L timing belt- 3/8" pitch x 1/2" wide. It has ~5/8" bore to fit on a 5/8" threaded rod. Of course you can easily edit it to fit any width of belt or any desired bore. The grub screw is a 6-32 screw that is held fast by a nylon lock nut.
I printed at 30% infill, 0.25mm layers, no brim, no raft, no support material required. I printed several test pieces tweaking the XY size compensation in Slic3r until I got the pitch to match the belt exactly (I used -0.2 mm).
The original files are shared publicly at OnShape. Try this link: