Turning Archive 2005

Subject:
Worm screw pre drill size

DougJ in Crawfordsville, IN
>I have been using a small 3" face plate for my initial blank roughing. I now would like to venture into using the worm screw that came with my Talon chuck. What is the size of drill bit used to pre drill the blank for the worm screw to fit but not be to sloppy as to let the blank wollar about?
Thanks for any help.

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