Parametric idler pulley
thingiverse
A parametric idler pulley is designed for use in conjunction with a bearing and timing belt. This model was inspired by Erik's suggestion (available at http://www.thingiverse.com/thing:3616) to improve Huxley's idler pulleys, replacing bearings with mudguard washers. It includes STL files for various sizes - a 623 bearing with a 5mm belt for Huxley, a 624 bearing and 5mm belt for Mendel, and a 608 bearing with a 6mm belt for Makerbot. However, as my extruder requires a new motor, I have not yet tested it.
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