pulley for cheap skywatcher electric focuser on a dobson with 1/10 crayford
thingiverse
To get it working, you'll require 2 M3 screws for securing the gear motor on your Dobson, one M3 screw with a nut to attach the pulley to the motor shaft, and a B100MXL belt (old Ultimaker motor belt) to power the fine tuning of the crayford. This setup is reversible, making it possible to manually adjust the crayford even when it's mounted on your focuser. Simply remove the belt and reattach it whenever you need to make adjustments. By doing so, you'll also enhance the precision ratio of your crayford.
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