Q: I use a drill press to make mortises. What is the best way to square the corners, a bench chisel or a corner chisel?rn-VERYL WILLIAMS, Springfield, Pa.rnA: CORNER CHISELS SEEM LIKE A GREAT IDEA, but they are unnecessary. When squaring a mortise, the most challenging job for a chisel is cutting the end grain, and that's where you should start. Choose a bench chisel the same width as the mortise. Begin with shallow cuts to prevent the chisel from being forced outside the mortise by the wedging action of its bevel.
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