At the top of our home page you will find a link to Oak Park, the home of The Router Workshop. You can purchase one of the best tables available there. You should have a router with a 1/2" collet, for help in choosing a router click on the blogs link and select Sawdust Dreams. You will find a wealth of good common sense information there to help you along. To cut a 3/4" groove you need a bit with a 3/4" diameter. Usually people would use a straight or plunge bit for this process, not a ball cutter. Is there a special reason you want to use the ball cutter bit?