You could do it with a router bit with the bearing on the end of the bit. You would need a thick pattern like 3/4 inch solid wood so the bottom of the bearing would still clear the table. Double surface tape the lexan to the 3/4 wood and follow the wood trimming the lexan as you go. You would need a base plate with a small hole the size of the bit, to stay on the lexan. You would probably need to cut lexan on band saw to get to close size then trim to exact size with router. You could stack several with double surface tape, but I believe you would get some movement on the top layers. Musky Glenn