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Using DEWALT RAFTER SQUARE (continued)
14) A valley-jack rafter must be further reduced in length to
compensate for the thickness of the ridge board which it abuts. This is
accomplished in the same manner in which the common rafter was
shortened, and for the same reason. (Refer to Page 24-Palter Length).
3/4 IN
VALLEY JACK RAFTER
HIP JACK RAFTER
Scribing lines
To make rip cuts that
follow the contours of
your materials, the
DEWALT Rafter Square
includes scribing notches
parallel to the rule edge,
for easy and accurate marking. Notches every ¼”
between 1” and 2.5”, and one at 3.5” provide scribe
line marking tool guidance for the most common rip cut
depths.
For example, if you want to remove 1.5” length or width of your
material, uniform to the material’s current contours, you will start by
laying the DEWALT rafter square flat on the top of your material, with
the wide base parallel to and hanging over the edge of the material
you want to remove. Make sure the base is pushed against, and in
full contact with the material edge you want to remove. Push your
marking instrument into the 1.5” notch until it maintains sufficient
contact with your material and is centered in the notch. Keeping the
pressure against the base in order to maintain full contact with the
material edge, slide the square along the edge of your material,
marking the full length that needs to be cut. Check the scribe line
with a tape rule to ensure sufficient consistency in guiding an
accurate cut.
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