Our Hackerspace purchased a SawStop with a built in Bench Dog. One problem, It was not the right size plate for our router. I designed an adapter plate that replaced the Bench Dog one.
This was laser cut out of 1/4" black acrylic. Any laser that can cut through 1/4" acrylic or wood should be able to complete this project.
I had to manually countersink the screw holes for the screws to sit flush before installing. You can use a countersink bit or a very large drill bit to accomplish this.
During assembly, I glued the two acrylic pieces together but it shouldn't be necessary.