Bolt Hobbing Jig

by d3delta3d, published

Bolt Hobbing Jig by d3delta3d Jan 7, 2015
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Simple bolt hobbing jig that clamps in your vice on a mill or tool post in a lathe. Uses 2 bearing to allow the bolt to feely rotate. Also has a hole through the clamp block so you can see the hobbing depth unimpeded by the tap.

If you want a diffenent sized clamping part let me know and I'll upload another size.


required parts to finish are:
-2 x 608zz bearings
-2 x M3x25mm cap head screws
-2 x M3 nuts

I print so the layers are horizontal through the jib. the M3 cap screws ensure that layers cannot delaminate with the insalled bearings. I use an M5 3 flute gun nose tap when hobbing. Once the tap touches the bolt I cut to a depth of 1mm. This give a nice radius for the bolt to grab the filament and nice sharp teeth.

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