On 14/06/2017 1:55 PM, Mitch Haley via Mercedes wrote:
Unless it breaks flush with the hole, it's hard to center the bit in a broken
bolt. Maybe grind a hollow in the middle with a dremel to start the bit?
And always remember, left hand drill bits are your friend. Nothing beats having
the bolt spin out of the hole while you're trying to drill it because your left
hand bit got stuck in it.
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The problem that I have with left hand drill bits is that the chuck
comes loose because the drill is running in reverse.
RB
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