Cutting Compound Miters - Black & Decker 9425 Instruction Manual

6. Remove the old blade and install the
new one taking care to oridVit the two
blade washers carefully, as shown in
Figure 13.
7. Manually lower the blade guard as far
as it will go.
8. Tighten hex screw "A" clockwise until
tight. (DO NOT OVER-TIGHTEN.)
Replace the hex wrench in the saw
table.
Picture Frames,
Shadow Boxes &
Similar Four-Sided
Projects
For a more thorough understanding,
we suggest that you perform these cuts
using scrap wood. Your new saw is the
perfect tool for making closed objects
v^ere it's necessary to join wood sides
and construct corners. Figure 14 shows
two typical types of mitered corners.
The example in Figure A is a joint
made by using the bevel adjustment to
bevel the edges of the boards (at 45®
each) to form a 90® miter corner. For this
operation, set the bevel post adjustment
at 45° and the miter table adjustment at
0^. Position the wood with the broad flat
side against the table and the narrow
edge against the fence.
The example shown in Figure B
is a joint made by using the miter table
adjustment to miter the width of the board
(at 45® each) to form a miter corner of
90°. For this operation, set the bevel post
adjustment at 0° and the miter table
adjustment at 45®. Position the wood with
the broad flat, surface against the table
and the narrow edge against the fence.
NOTE: The examples shown and
discussed above are for four-sided fig¬
ures only. The chart in Figure 15 shows
the setting for the miter table or bevel
post for several different shapes.
Observe that the angle of cut decreases
as the number of sides increases. These
angles are derived from the formula:
180® r number of sides in desired object
= miter angle for each joint
1 FIG. 15
-EXAMPLES —
NO.
ANGLE
SfOES MITER OR BEVEL 1
■HE
25.7®
8
22.5®
. .......
9 ...:.- •; -.
10
Cutting
Compound Miters
A compound miter is a cut made
using both a miter setting (made by
adjusting the miter table) and a bevel set¬
ting (made by adjusting the bevel post)
The resulting cut is a beveled (or com¬
pound) miter. These cuts are used for
making frames or boxes with sloping
sides like those shown in Figure 16. The
important thing to remember when mak¬
ing compound miters is that the adjust¬
ments of miter and bevel are inter¬
dependent with one another. Each lime
you adjust the miter table you change the
bevel setting; and every adjustment to
bevel changes the miter setting. It may
take several settings to obtain the
desired cut. ALWAYS MAKE TEST
CUTS IN SCRAP MATERIAL
BEFORE ATTEMPTING FINISHED
WORK.