Quote:
Originally Posted by BILL WILLIAMSON
Purdy,
NOT recommending this, But I've seen my friend, Ron, BLOW a 1/2" broken stud from a block, without even drilling, with a light duty cutting torch & the threads were left intact, with only a few tiny dingle berries left, that were removed easily with a pick! Cleaned the threads with a bottoming tap, & PERFECT!!
AGAIN, I DON'T GENERALLY RECOMMEND THIS FOR THE NOVICE OR THE FAINT OF HEART!! Ron's had years of experience doin' this!-----Bill W.
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Yes, I've done this myself. Even though steel has a higher melting point than iron the cast iron will not melt due to the high carbon (graphite) content. The graphite wont burn and in order to cut CI you have to somehow "wash" it out as the iron is heated. If you're fairly careful you can blow the melted steel out of the bore, then clean it up with a tap. Find an old block and try it, not that difficlut.