GOOD angle aluminum?

[BrianG]

I thought I was being careful. I even did close to what you describe (3 turns in/1 out). When it broke, I wasn't even putting much pressure turning - it just shattered. Even the drill seemed dull from the package - it simply wasn't cutting. I was thinking (hoping) it was just a bad brand or something. And of course it broke where I can't get to it to salvage the piece I was tapping. Grrr.

I'll give the plastic idea a try instead. Should be lighter too. If that doesn't work out well, I'll order a couple taps through mcmaster and give the Al another try.