I love the 1" drill for precision. The drill hole at the side of the mortise is a very precise guide for paring, you pare down between the holes until just a sliver of the drill hole is left. It works brilliantly.
Contributor
I love the 1" drill for precision. The drill hole at the side of the mortise is a very precise guide for paring, you pare down between the holes until just a sliver of the drill hole is left. It works brilliantly.
Member
A have spent years as a restoration carpenter and in the case of mortised locksets, the mortise is first rough drilled and finished with a chisel. Practically speaking a wide mortise in seasoned hardwood-stress on hard-drilling seems to me to be the best option. Wider yet in green wood, 19th century timber frames were roughed out with a hand cranked boring machine with a depth stop or by a tee auger for the more modestly equipped carpenter.
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