Bosch GCM18V-12GDCN - Page 45

45
Saw Operations
12 RUN
12
RISE
12/12
ROOF ANGLE = 45° (SLOPE)
RAFTER
12 RUN
6
RISE
6/12
R
O
O
F
A
N
G
L
E
=
2
6
.
5
6
°
(
S
L
O
PE
)
R
A
F
T
E
R
Pitch angle information – The top section
of the miter scale shows angle settings re-
quired to cut roof rafters to the “Pitch
Angle” system. 2/2, 4/12, 6/12, etc., are all
pitch angles. This system is based on using
the English “inches.” A 6/12 pitch angle
roof equals a ratio of 6" “rise” for every 12"
“run” (see Fig. 45).
Crown molding information – There are
miter position settings for compound-cut-
ting crown molding flat on the table. Crown
molding with 38° “spring angle” uses the
31.6 setting (with detent) and crown mold-
ing with 45° “spring angle” uses the 35.3
setting. NOTE: This cutting method also re-
quires that specific bevel angles are set –
see Cutting Crown Molding on page 53.
Fig. 45
1609B06757.qxp_GCM18V-12GDC 3/25/20 12:35 PM Page 45
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