Some of the dremel bits allow you to square the corners too. I think they are either some type of milling bit or they're deburring bits that are about the same. I think a 1/8 rounter bit in a dremel would work too. I tried routing my pockets with the 1/8 bits and they sometimes broke off. The 1/16 router bits really square off the corners, but i broke them frequently. I like the idea of just drilling the pilot holes. It sounds easy and accurate.