Zheng-like pocket gears
thingiverse
This is a rewrite of Zheng3's pocket gears design (http://www.thingiverse.com/thing:185155) with modifications for 6mm magnets. The improvements include a stepped center hole for better magnet retention and a backing plate to secure the gears on your shirt for easier turning. The backing plate holes now match the number of sides on the gears, allowing the magnets to fit correctly. After printing, heat the parts gently to fit the magnets; then reinstall with glue as a safety measure against swallowing hazards. To wear, place the backer plate inside your shirt and let the gears snap onto it for secure and easy turning motion. The design is licensed under GPL due to Greg Frost's gear library license.
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