Knurled Guitar String Winder

Clever tool to use when changing guitar strings. Guitar string winders cut down the time it takes to tighten your newly installed strings tremendously. The knurled handle ensures a nice grip on the tool.

MCP

P.S.
Please let me know if there are any tolerance problems.

EDIT (1/18/15):
Made changes to tolerances, and knurl to improve printing success and tool performance.