Torque converter bolts?..

mopowers said

Gotcha! So the collect clamped on the head then? I would think be unstable. Or did the backstop stay in the collet keeping it firm while being cut? Unless I'm not thinking about it correctly. As a disclaimer - I'm a total lathe newbie and am always interested in learning ways to use a lathe.

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That lathe has a hydraulic chuck on it. So long as you have the head of the bolt against the backstop it will clamp around the head of the 12-pt. just fine.

The backstop is bolted into the chuck, threaded rod with two jam nuts and just adjust it out to get it in an area you like.

Sometimes I use the EDM and cut a shape into a collet to hold an odd shaped part, or make a collet out of aluminum to hold something.

The possibilities are only limited by ones imagination.

Tom