Seven Planet Gear Bearing
thingiverse
A seven-based design of http://www.thingiverse.com/thing:53451 was crafted, inspired by the number's appeal. To make it work on a Replicator, I adjusted tolerances to .35mm. Some wet sanding with emery paper fixed the bottom layer issue. The customized 1/4" hex drive shaft-compatible bearing serves as a fastener guide, protecting fingers while providing a firm grip. Kudos to Emmett for the original concept! Customizer was used (http://www.thingiverse.com/apps/customizer/run?thing_id=53451).
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