Broken Bolt/ Stud Addition
by Seth Markowitz
One other tip to add to the video of removing a broken stud is to use a candle on the threads. When you're done heating, take a candle and drip wax onto the threads. It uses capillary action and chases up the threads, adding lubricity without burning off like oil.
Works unbelievably well.
video on removing a broken bolt or stud
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