by dustinandrews, published
Gearbugs are toys built from gears. Gearbug #2 a planetary gear system built to be turned by hand. Oddly addicting to sit and turn. Requires a single M3x12 bolt and nut. You can see what it looks like in action here: authenticinvention.com/images/gearbug/GearBug2sm.gif
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Cut out all the parts with a laser cutter from 1/8th inch MDF or plywood. The file is in Inkscape format. I cut black first, then blue then red.
Glue the big ring to the back. Make sure to line it up exactly.
Using the bolt as a giude, glue the sun gear to the handle. Make sure the radial holes line up.
wait for the wood glue to dry. You don't want to glue the plaentary gears to anything by mistake.
Put the bolt up through the bottom.
Line up the three planet gears around the outside spaced evenly.
gently lower the handle and sun into the middle.
put some thread locking compound on a nut and thread it on. It need to be flush with the top of the screw. Not too tight, not too loose.
wipe off excess locking compound and let the glue dry before turning the handle.
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