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A drill bit will not get your broken tap out. You will have to use a chisel or a center punch to try and break it up into pieces and pick them out or push them through the hole. A bit will just break making your problem worse..

ANS 2 - I've done this many times with right angle pliers. I have 3 sizes of needle -nose pliers that turn a right angle about 1/2 -1 inch from the point. These are available in real tool stores. Take the appropriate size plier and carefully fit the points around the tap and gently rotate anti-clockwise while pulling up gently too.

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Q: What bit do you use to drill out a broken tap?
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