Not sure where everyone got that I had snapped a bolt off. I would have said I snapped a bolt off. Lol. I cross threaded the bolt in about half way. Screwed the threads up to start. Guess I need to get better at telling the story. 😁Just one thing to say about easi-outs / stud extractors. Don't!
If you've snapped your half-inch dia bolt, why would drilling a hole up the middle and screwing a harder, more brittle, easier to snap 1/4" or 3/8" dia thing work? When it snaps, you now have the harder steel of the extractor stuck in there - which your HSS drill you used to drill the hole it is in will not touch.
Either drill it out fully, to the tapping drill size, and pick the metal out, if you can get the drill centered - or take it somewhere that can, BEFORE you really **** it up and cause more expense.