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Question: I dont know the proper name or where to find it. A square covering that goes around the drill bit to drillout square holes. I know once you tell me I will feel stupid. Thanks Norm for all your tips and tricks. Mike Answer: Sounds like your are talking about a hollow chisel mortiser. The chisel is a hollow square tool with sharp edges that gets mounted into a drill press like machine. Inside the square chisel is a drill bit which removes most of the wood and the chisel does the rest. They come in various sizes. |