Paul,
Great info -- yes, I'll check out that link and also look up the max RPM for the bit I have.
I should point out that this is really for a very superficial detail and no more than 1/8" deep and 1" wide. That would mean that roughly 10% of the bit would be in contact with the bit, which also means that 2 of the flutes will be mostly exposed to air during each turn of the bit. And this would be birch, not 304 stainless or lignum vitae :-).
Of course I can do this other ways in two passes with a dado blade and radius router bit or a straight router bit in place of the dado, but that opens possibilities for gouges and tear-outs and more sanding.
Well, one way or another this is great information and I'll just have to do some more investigating, but my gut tells me that if the RPM is ok, then for what I want to do, this will work fine.
Thanks,
Jim
Jim Rebman -- recovering audiophile
Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).
s.e.x. 2.1 under construction. Want list: Stereomour II
All ICs homemade (speaker and power next)