Quote:
Originally Posted by simplechamp
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.
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if un-annealing means un-hardening then it was fine to drill with.
just heat up till red hot, then cool as slowly as possible for 24 hours (cement dust works a treat) and then drill with a standard drill bit.
edit: first LST diff in final stages now, i ended up using the traxxas center diff gear on the LST diff instead as that is what i had on hand. will fill with 100k oil then go try and kill it on 6s
shaun