Thanks all for you questions and comments.
Petey
What lift are you using?
LIttleBlackDuc
Were these cut,
Drilled with:
RyanGi
If I could figure out a way to raise and lower them quickly and accurately to a perfect predetermined height
For good understanding I do not raise or lower the routerbits. The height is only set once after a profile change, and the cutters never sink under the table.