M8 Fingerwheel

A fingerwheel for a M8 threaded rod (like the MakerBot Z rod), with space to add a M8 nut. I plan to add this to the CRASH Space MakerBot as a manual Z-axis control, and to use it for a leveling platform idea I'm working on.

Inspired by Antona's 4-Star Knob For M8 Nut (http://www.thingiverse.com/thing:3723), I used zignig's Finger Wheel OpenSCAD script (http://www.thingiverse.com/thing:3288), tweaked it a bit, then added a larger shaft and carved out space for the M8 nut.

Put this on a rod, lock a second nut next to it, and you can spin the rod all day without it unscrewing from the rod.