Originally Posted by 3alarmer

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...there's an oversized tapping tool that you then use as the removal tool, but nobody seems to sell it any more, and it was kinda pricey anyway. There really are not too many options for this. If you're using it, make certain to install a new, longer life, high quality BB unit of the proper length and you'll get a lot of miles out of it before you need to figure out how to get it off again.

I've removed a lot of them for people, and it's always a PIA. So generally, even if it's a very nice crank I just save the chainrings/bolts and toss the arms. Not worth the effort you go through to get it off again.