Have you used them for deep holes?
I have a couple of intermittent jobs where I have to make 1 3/8"
diameter, 1 1/2" deep holes in mild steel. I have been using better
quality holes saws, but they only last for about a dozen or two holes.
They cost under $20 each. Would I be better off with and 80 or 90
dollar annualar cutter? I know guys who use them for thinner work, and
they work well there.

Pete Stanaitis
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Stupendous Man wrote:
They work well in a mill for partial holes, but everything has to be rigid.