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woodworking-square-hole-drill-15 How a mortiser drills square holes
Jan 12,  · Russian Video with no audio and excellent animations. May 16,  · Yes, you can drill a square hole with a round bit. Here's how: An auger-type drill bit spins inside a hollow four-sided chisel secured to the mortiser. The bit itself locks into a drill chuck inside the head of the machine. When you pull down on the mortiser's feed lever, the bit and chisel plunge simultaneously into your workpiece. For use on doors with a thickness range of /8 in. to /4 in., the Wood/Metal Door Lock Installation Kit includes a Door Lock Woodworking Square Drill Bits Effect Bracket, two bi-metal hole saws, an arbor with pilot bit, a 1 in. wood spade bit, bronze oxide drill bits, and a 2 in. double ended screwdriver bit.

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