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This is a single-plate little and big gear extruder gear replacement set for the Printrbot Wood Extruder. It's working well on my PB Plus.
I printed this with 0 extra shells, 100% infill, and it seems quite sturdy and reliable on my Printrbot Plus--in fact, it's extruding right now!
It's a derivative of:
I deepened the hex head hole, to put the hobbed bolt teeth at the right depth. There's a little spare depth for a thin washer between the gear and extruder, so if the gear is a little warped, it will still turn cleanly.
If your extruder is a little goopy, like mine, and it prints interior holes undersized, you may need to drill out the center hole to 5/16 inch, and/or chisel some clearance around the hex head. A sharp 1/4 inch wood chisel works well for this.
Spur gears for Printrbot Wood Extruder by olawlor is licensed under the Creative Commons - Attribution - Share Alike license.
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