miter gauge isn't adjusted to be perfectly square, the end cut on
your wood isn't perfectly square, and the stop you use to gauge the
length of your tennon isn't perfectly square, then your shoulder cuts
won't come out even. Often these details are easily overlooked. Without
the benefit of precise measurement, this task can be very frustrating.
TS-Aligner is designed to give you assurance that these things are
all done correctly.
January 21, 2006.