4 Jaw Chuck, with a difference

[Paul Jones]

Harold,

I like your universal holding design and especially for holding odd sized thin parts that required at least three hands when setting up in a conventional 4-jaw chuck. Looks like an easy setup for consistently machining the four eccentrics for dual cylinder and compound steam engines. I think your center hole jig for measuring the jaw distances could be easily adapted for use in initially setting up other types of 4-jaw chucks. Thanks of the new ideas and video.

Paul