You are so right Jim. Especially with BIG bits like the two outer ones. It should be obvious why I use the far safer vertical panel raising bit rather than the left hand one.Thanks for the repeat.
Almost always I bottom the bit out and pull it up 2 hairs.... something that cuts which is spinning up to 333 revolutions every second need not be played with.
The problem with that Tom is that you lose depth of cut because once the shank reaches the end of the collet (1"), it receives the maximum grip, beyond that simply you lose depth of cut.I just put in a half inch grommet on half inch collets. About 1/8th thick. On 1/4, almost always the trim router, I just lift about that much. With matched door sets, the grommet is almost a must. Grommet, not O ring.