On Apr 7, 2015, at 08:49, re.carter— via maillist <> wrote:
This is what I use for cutting stainless, well worth the investment. Normal bits might work for a while, but these seem to stay sharp whereas the normal steel bits dull after a while. Don’t waste your money on the titanium nitride coated bits. I don’t think they work any better than the regular steel bits. You don’t always get good quality from these guys but in some cases such as these bits they sell a good product.
http://www.harborfreight.com/115-pc-cobalt-drill-bit-set-61886.html
In a drill-press adjusted to the proper speed, they will indeed cut spirals off the stock. I use cutting oil when drilling or tapping hard stuff like this.
Rich
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