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I use a compression bit for cutting instead of a spiral upcut bit. The compression bit is made to cut down from the top and up from the bottom. I use it on plywood, acrylic, melamine and laminates. It produces a really smooth edges on the top and bottom. But you do need to use a guide with the router.
You can also use pattern bits. The come in 2 and 3 flute designs and cut a down shear. You can get bearings for the top, bottom or both. They cut real smooth also.
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