Turning

Subject:
Re: Chuck unscrewing from shaft

Walter Ahlgrim
When you put the chuck on the lathe spin the chuck fast for the last revulsion the chuck will come to a sudden stop this locks the chuck to the spindle and registers it so the chuck will turn true. If you do not set your chuck in this way it can unscrew easily when you press the stop button your lathe stops in a programmed number of seconds. Generally this works fine for light weight work but with heavier item the spindle stops faster than the chuck and can unscrew the chuck.

If you decide to add the locking screw you will need to be careful to remove the locking screw before trying to remove the chuck. Failure so can do major damage to the spindle threads.
Walta

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