I have been working on my new dust collector and need to make about 15 blast gates. To make these I will need to make four, six inch holes it one inch plywood and plexiglass, 60 holes altogether. I could rough the holes out with a jig saw and then use a pattern bit in a router for final size. Or how do you think a fly cutter in a drill press would work? I think the actual size will be about 6 1/4 inches. Does anyone have experience with a cutter this size in one inch wood?