|Dave Halford||02/07/2021 16:46:05|
|2007 forum posts|
I just broke off an old 7BA carbon steel tap in a piece of 3mm steel, jammed solid.
Marked the centre of the underside with a big X, placed my cheapy plasma cutter gun on the X and blew it out with a 1 second burst. Even better the hole was still tap-able.
Of course I was lucky it was a through hole rather than a blind one.
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