Quote:
Originally Posted by shaunjohnson
how on earth did you drill holes in your "cap" cause i actualy DE-hardened mine, heated it up then let it cool in cement dust for 24 hours. i can drill mine now.
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As previously posted I actually had my local machine shop tell me they couldn't even do it. Ended up spot annealing and using a pure carbide bit as suggested by mistercrash and it was a piece of cake. I'm kind of interested to see how it would be drilling an un-annealed cap, just to compare it and see how much the annealing helped. Also used a cobalt tap for the threads, but depending on what design you follow you might not need to tap at all.