Extruder Drive Gear Test Rig
thingiverse
I built this testing fixture to put the "bite" of several different extruder gears to the test. A metal clevis pin axle holds the drive gear, pivots at one end, and allows you to hang a weight from the other by a string. I used a pull scale (for weighing luggage, fish, etc) to see how much each gear could hold before slipping. Full test details and results can be found in my Instructable. http://www.instructables.com/id/Extruder-Drive-Gear-Shootout/ The source file (DesignSpark Mechanical RSDOC) is included here.
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