Don't Say You Haven't Been Warned: Drill Bits Cause Cancer!

Yeah, be careful while lap drilling........
 
If you inhale finely ground chromium while sharpening bits, you can get cancer. It doesn’t take years of working in a factory from a Charles Dickens novel to do it, either. While you're waiting for the oncologist's results, you could nibble on the ends of the bits and be alright. Eating Cr is not a health risk on its own.

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Is that where the cancer risk is from? Chromium?

I just did another stupid metal trick. I picked up these nice 3M scotchbrite wheels. I love them; they are nice no-nonsense abrasives which do what they are supposed to. After buffing some nicks on a teaspoon, there seems to be an objectionable metallic taste, but only on the buff marks. Do these need to be passivated?

Or is it mysterious rust preventer? Sometimes, these tools smell a little suspicious. :bonesrock:
 
I think it may have to do with the cosmolene like coating applied for rust protection during shipping. Warning!! lap drilling may cancel out any future need of lap dancing. :) Mike
 
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