Buy the cheap a harbor freight electric grinder and a 25.00 router speed controller that they sell. If you want something a few dollars more get a foot speed controller from eBay like a sewing machine has. Slow and easy is the key. I will be posting up a few pictures of the Ford intakes I’m getting New Year’s Day. As far as burrs get don’t let anyone talk you into buying an aluminum single cut burr. Get a good three inch double cut and dip it in transmission fluid.
