Holding irregular parts with an old gear

Winegrower

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I saw this somewhere awhile ago, and finally tried it. Hey, this really works, and might solve some weird problem for you someday.

Cut an old gear in half, mill the cut faces square, and put them in a vise ”tooth to tooth”. As the vise compresses the gears against the work, they automatically rotate to the perfect angle to hold the work very tightly.


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That's cool looking to but I'm not sure it quite meshes for me because I have seen a similar thing with a block shaped like a woodruff key with the radius against the other vise jaw. Never tried either. If I happen upon a spare gear, I'll try it!
 
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This caused a real shift in my thinking.

The good ideas around here come at a higher ratio than one might expect - causing the need to sync one's thinking. It almost requires a manual.
Because we all know it's not automatic.

Oh man.....
 
That's cool looking to but I'm not sure it quite meshes for me because I have seen a similar thing with a block shaped like a woodruff key with the radius against the other vise jaw. Never tried either. If I happen upon a spare gear, I'll try it!
The Woodruff key shaped insert [chordal segment] is commonly used, but this gear concept is interesting. It would take some care that meshing occurs with centerline of part being clamped. The example of a ratchet is extreme in width, so little issue except the contact area is very small. Wouldn't take much torque of a cutter to spit it right out; chose whether to go conventional or climb wisely.
 
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