abstract:A corner chisel is a tool for cutting sharp internal corners in wood, often used for mortice joints, or hinge rebates. The hole will typically be cut by a router, or occasional drilled, leaving rounded corners, the function of the corner chisel is therefore similar to the square morticing chisel used on a morticing machine.
Point angles at outercorner and chisel edgecornerare proposed to be usedas the drilldesignparameters to determine the type uniquely and the relief Angle is used as a supplement parameter.