42
▶ Miter Cuts
Pitch angle information
– The top section of
the miter scale shows angle settings required
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 Figure 45).
Figure 45. Pitch Angle Cutting – Common Roof Rafters
12
12
12/12
R
O
O
F A
N
G
LE
=
4
5°
(S
LO
P
E
)
R
A
FT
E
R
RISE
RUN
12 RUN
6
6/12
RO
OF A
NG
LE =
26.5
6° (S
LO
PE)
RISE
RAF
TER
Crown molding information
– There are miter
position settings for compound-cutting crown
molding flat on the table. Crown molding with
38° “spring angle” uses the 31.6 setting (with
detent) and crown molding with 45° “spring
angle” uses the 35.3 setting. NOTE: This
cutting method also requires that specific
bevel angles are set – see Cutting Crown
Molding on page 50.
Saw Operations
2610051885.qxp_CM10GD 12/3/18 8:49 AM Page 42
