Worm Drive Gears

thingiverse

Edit: I would recommend printing this version that turns the screw vertical and cleans up the stl files:http://www.thingiverse.com/thing:2303403 Thanks dnewman! 30 to 1 worm drive reduction gears. 3 parts. Could be used in a clock in addition with a 2 to 1 reduction due to ratio. The worm wheel is helical. https://youtu.be/VE7kmcveCOQ Print Settings Supports: Yes How I Designed This Created with sketchup.