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First mark your cut-line with a marking knife on all
surfaces that will be cut. Then take a wide chisel and
place the tool's edge into your knife line with the
bevel facing the waste. Rap the handle of the chisel
to drive it into the knife line all around the joint.
Remove the chisel and then pare away a wedge-shaped
piece of wood on the waste side, working up to your
now-widened knife line. The second chisel cut must be
deep enough so that the set of your saw's teeth is below
the face of your work.
Secure your work to the bench. Place your saw into
the chiseled notch and make the cut. By using a chisel
to define the kerf of your saw, you eliminate the common
problem of the saw's teeth tearing at the surface of
your work.
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Widen all knife lines: Place your chisel's edge into
your knife line and tap the handle to drive the edge
into your work, widening the "V" left by your
knife.
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