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On the RepRap site, they have a short piece on hacking the Solarbotics GM3 gearmotors. The GM3’s are the standard motor used in the RepRap extruder. The piece covers locking the internal clutch to get more torque, lubricating the gears, and an easier mounting solution. These tweaks can obviously be useful in other motor applications.

Hacking the GM3 Gearmotor

In the Maker Shed:
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All this week we have a 10% off sale this week in the Maker Shed, use code “2009OX” at the time of checkout – Happy Chinese New Year!

Solarbotics Gearmotor GM_3
Our Price: $5.50