Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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When drilling metal with a 1/2" bit, the chuck keeps coming loose on the arbour. It is a new Craftsman drill press.

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I had a similar problem with my Delta; the MT socket may have dirt in it that prevents a tight fit, or there is a slight machining error. My solution was to clean the joints, and place a drop of Krazzy Glue on the taper, and ram it home - has stayed put for the last 20 years!

Posted on Jul 26, 2008

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