I spoke to Charlie today who warned me about the tendency of a dovetail bit to climb out of the collet. Sure as hell, as prophesized, as I was cutting the final two pieces, I noticed AFTER the cuts that the bit had come out about a 1/4"! I remember tightening that sucker up in my 7518. I wiped out the collect with a Q-tip to remove any oil residue, of which there appeared to be some. And of course I wiped the shank of the bit with a rag. Can't think of any other preventative measures.
How can I prevent this from happening in the future? The CMT bit is available only in a 1/4" shank. It's a 10 degree 1/2" for use with the Incra jig for 1/2" material and through dovetails. All my other dovetail bits are 1/2" shank.
dave