These are the herringbone pattern gears used in the Printrbot's extruder, designed by Brook Drumm (gears from Wade's Most Excellent Extruder). The gears that came in my Printrbot Plus kit were warped and misshapen. Laser-sintered nylon is a very precise way to make objects, why not my extruder gears? These are from the original STL files from the Printrbot.
See the picture with the black and the white gears:
The Black gear came with my Printrbot Plus kit.
The STL file shows a diameter of 63.78 mm.
The gear that was printed by a Printrbot in my kit measures 61.25 (averaged 8 measurements)
The white gear was printed by Shapeways in Laser-sintered nylon and averages 63.25 mm
If you want a little Headhunter - Gothic - Cannibal - Biker vibe on your 3D Printer, check out the Skulltruder!
cm:
7.278 w x
8.3 d x
2.1 h
in:
2.865 w x
3.268 d x
0.827 h
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