[QUOTE=Toolmaker51;199850]Generally, carbide milling cutters are slightly sharper than HSS, partly because higher density. Solid D-bits are available in either material, larger diameters are cemented (brazed).

I've always understood HSS cutters are sharper than carbide. But carbide tooling is harder, so you can (and should) increase the depth of cut and/or surface speed, and carbide tooling holds a decent edge longer. On the lathe, I sometimes switch over to HSS from carbide on a final skim pass to make the finish nicer. Of course, that could be because I'm on the bottom end of the recommended power, speed, and material removal ranges for carbide cutters and right in the sweet spot for HSS. On the wood lathe, too, carbide cutters give a reasonably good finish, while a sharp HSS tool can give a really fine finish.

Am I misunderstanding or misremembering something? It could easily be I've got all this confused...I mean, there was this one time I thought I was wrong, but it turned out I was mistaken. (buh-dum-bump!)