I have in the past seen a 1/4 x1/4 or a 3/8x3/8 square chisel that you could use when making G&G type joints for the ebony plugs. It would be used in event you don't have a bench top morticer. You would drill your hole and then square it up by just hitting this chisel. I know I have seen it but can't remember who sells them. Hope some one else has also seen them. Would like to buy one, if you can help would appreciate it Thanks in advance.