Drilling out broken bolt extractor
Senior User
Joined: Jan 2005
Posts: 314
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Try a Left Handed Drill Bit
Congrats on your good luck!!
Hope this does not happen to you again, but if it does, instead of an extractor, I would TRY A LEFT HANDED DRILL BIT of the about same dia. that you used as a pilot for the extractor. Obviously you need a reversable drill too. This has worked for me every time so far. Wish I knew about it years ago. Hate extractors. Break all the time.
The LH drill is the trick!! Had a couple of old timer machinists tell me about it. They say the direction combined with the heat and friction will remove the broken stud/bolt. Works well so far!!! Backs the little slobs right out of there.
Of course the LH drill won't work on a hardened steel extractor.
Industrial supply houses/catalogs have the LH bits. Won't find them at sears, lowes, or HD, etc.
Dremel with carbide or a diamond bit is about the only thing I can think of that will cut thru the extractor. You done good!!!
Hope this does not happen to you again, but if it does, instead of an extractor, I would TRY A LEFT HANDED DRILL BIT of the about same dia. that you used as a pilot for the extractor. Obviously you need a reversable drill too. This has worked for me every time so far. Wish I knew about it years ago. Hate extractors. Break all the time.
The LH drill is the trick!! Had a couple of old timer machinists tell me about it. They say the direction combined with the heat and friction will remove the broken stud/bolt. Works well so far!!! Backs the little slobs right out of there.
Of course the LH drill won't work on a hardened steel extractor.
Industrial supply houses/catalogs have the LH bits. Won't find them at sears, lowes, or HD, etc.
Dremel with carbide or a diamond bit is about the only thing I can think of that will cut thru the extractor. You done good!!!
Last edited by cetane anyone ??; Mar 4, 2005 at 08:59 PM.
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alchemist1
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