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Screw Holding Made Easy

by Al Hanson

A while back I needed to modify a flat head screw for a special purpose. I couldn’t buy a screw that would fit the need, so my lathe came to the rescue! At the time, I didn't have any lathe collets and didn't want to ruin the threads by clamping in the three-jaw chuck. I know some guys just slit a nut, but the solution shown in the photo is what popped into my brain.

The idea was to make a nut work like a real collet. I just slit each flat on the nut, using a cutoff wheel in the Dremel. I cut a little more than halfway through, alternating the sides on each flat. It worked great – no slippage and no messed up threads.

It takes very little pressure to tighten the lathe's three-jaw chuck, and it releases the screw completely when the chuck is loosened.

I was concerned that the nut collet might stay crushed after it was clamped and in preparation I bought a grade-8 nut. I shouldn't have worried though, as the grade-5 nut sprang back to normal once released.

Thanks Al! Your subscription has been extended by an issue!

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