Friday, July 24, 2009

Pin Chuck

I am working on developing a version of a pin chuck for the lathe. I want to try using ball bearings as the jamming device instead of the pin.

The picture shows the ball that would fit in the hole drilled off center in the rod. The rod was just a little smaller in diameter than the test tube that I will use to make test tube vases. This is unfortunate as I would have to redrill the holes to use the test tubes as pin chucks do not work well in holes that are over size. I also found that the single ball does not hold well enough so will try drilling a second hole and use two ball bearings. This may stabilize the pin chuck better too.

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