Indexed Bolt Hobbing Jig for rotary tool by ChrisMagno 3d model
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Indexed Bolt Hobbing Jig for rotary tool by ChrisMagno

Indexed Bolt Hobbing Jig for rotary tool by ChrisMagno

by Thingiverse
Last crawled date: 3 years ago
I never had any luck hobbing a bolt using the tap method. When I used my rotary tool by hand, the teeth came out uneven.
This work in progress jig should allow for either a 8mm, or 5/16" bolt (or rod with nut) to be indexed to 19 positions. The ratchet head was edited from this excellent thing: http://www.thingiverse.com/thing:8752
I put up a short 30 second video of this jig being used. I was holding the camera, and using the rotary tool and making sparks fly all at the same time. With some practice, I feel I will be able to make many bolts for my army of 3D printers.
http://youtu.be/KpnZK_AJLgM
Edit -
The idea for this thing came to me after seeing many great ways/things to hob bolts. (That and after the snow I didn't want to go out to the cold work shed) My thing is an amalgamation of many of the ideas found here on Thingiverse:
http://www.thingiverse.com/thing:9291http://www.thingiverse.com/thing:10360http://www.thingiverse.com/thing:10110http://www.thingiverse.com/thing:11275

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