Always practice the joints first using scrap material.
Choose the shape you wish to build, (try the triangle
or square first - they're the easiest). Then decide how
steep a bevel angle you want, shown as b° on the chart.
(Shallow angles and narrow boards result in picture
frames or trays, larger angles and wide boards result in
planter boxes).
Step 1
Cut each of your workpieces to exactly the same length
in the table saw mode, and cut opposing MITRE ANGLES
(M°) at each end using the Workcentre protractor. Use the
outer scale of the protractor (45°- 0 - 45°), with the
and
symbols indicating which side of '0' to set it.
(If you use the left table slot in table saw mode, the
protractor positions and settings are the same as those
shown in the protractor diagrams.)
ANGLE SETTINGS
b˚
b˚
20˚
m=30˚
30˚
45˚
50˚
b˚
22.5˚
m=45˚
30˚
45˚
60˚
75˚
b˚
m=54˚
30˚
45˚
60˚
75˚
b˚
m=60˚
45˚
60˚
75˚
b˚
m=67.5˚
45˚
60˚
75˚
m˚
Mitre Angle (M°)
Bevel Guide Angle (B°)
31.6˚
17.2˚
33.7˚
25.7˚
38.2˚
37.8˚
49.1˚
48.8˚
Mitre Angle (M°)
Bevel Guide Angle (B°)
47.3˚
15.7˚
49.1˚
20.7˚
54.7˚
30.0˚
63.4˚
37.8˚
75.5˚
43.1˚
Mitre Angle (M°)
Bevel Guide Angle (B°)
57.8˚
17.1˚
62.8˚
24.5˚
70.0˚
30.6˚
79.4˚
34.6˚
Mitre Angle (M°)
Bevel Guide Angle (B°)
67.8˚
20.7˚
73.9˚
25.7˚
81.5˚
28.9˚
Mitre Angle (M°)
Bevel Guide Angle (B°)
73.7˚
15.7˚
78.3˚
19.4˚
83.9˚
21.7˚
Step 2
Fit the Bevel Ripping Guide and set it to the BEVEL GUIDE
ANGLE (B°) shown.
Re-cut all of your mitres on the Bevel Ripping Guide using
the protractor positions and settings shown.
Equations
tan m°
M° = tan
(
)
-1
cos b°
B° = cos
(
sin m°
)
-1
sin M°
M° = True mitre angle to be cut
B° = True bevel angle (BEVEL GUIDE ANGLE)
m° = Corner half angle
b° = Side angle to be horizontal
31.6˚
33.7˚
39.2˚
USE*
2.1˚
*
4.1˚
9.7˚
18.4˚
30.5˚
32.2˚
27.2˚
20.0˚
10.6˚
22.8˚
28.9˚
36.5˚
28.7˚
33.3˚
38.9˚
31.6˚
33.7˚
39.2˚
USE*
42.9˚
*
40.9˚
35.3˚
26.6˚
14.5˚
32.2˚
27.2˚
20.0˚
10.6˚
22.8˚
16.1˚
8.5˚
GB
16.3˚
11.7˚
6.1˚
Operating
7