I usually use my table-mounted Hitachi with the LV oversize collars either
in the table or hand-held. And the Bosch 1617 has those neat clip-in types
that work so well with the dovetail jig, so I grabbed my old PC compatible
brass types to use with the 1613 to template rout some mortises.

The collars projected 1/2" , the ply - not. Fortunately curses do not
tarnish brass, only the one who utters them. "NO DEAR, I DIDN'T HURT
MYSELF."

Quick jig to support the collar square to the disk sander modified the one I
needed to 7/16 to serve this and in anticipation of the next reduction in
thickness. I cut the mortises last night, will modify the remaining three
large collars first chance.