Hi Bob
You can give this a try it works for me, I made a quick and easy jig out of some hardwood and put it a NEW utility blade that is screw (in two spots) to the stock and just hangs down a bit from the bottom of the sled jig.
You just press down and drag it down the stock and it cuts the plywood about a .010" deep right at the edge of the round over ,the bit cleans the blade cut right up but it's real hard to see the blade cut once you sand the stock a bit.
You can also make more than one or two passes with the SHARP router bit but plywood just likes to rip out.
nasty stuff sometimes )
Bj
