"Sharp internal corners"

[MilesBatty]

I'm trying to use a V-bit to cut beveled letters, and I want the interior corners to be sharp as well. In the Tabs box, under Corners, I cannot make the "Sharp internal corners" option highlight, what a I doing wrong?

[Adrian]

It has to be an outside or inside profile cut with a tool defined as a v-bit.

[MilesBatty]

I did figure it out, after a couple of tries - 2D profile, turn on Leads, 45 degree Lead in, then the Internal Corners option is usable. Hey, it worked.