Pattern Work - Grizzly G1035 Owner's Manual

Pattern Work

When using a pattern, the rub collar can be posi-
tioned either above, below, or between cutters.
The pattern is usually used when the entire edge
is to be shaped or when many duplicate pieces
are needed. Pattern work is particularly useful
when rough cutting irregular shapes oversize and
then shaping the edge in a simple two-step opera-
tion. A pattern can be incorporated into a fixture
by way of adding toggle clamps, hand holds, or
other safety devices.
You have greater flexibility when choosing the
correct diameter rub collar for pattern work than
for non-pattern work. As shown in Figure 54, the
position of the pattern determines the depth of
cut. In other words, the pattern size is dependent
upon the inter-relationship of cutting circle, the
desired amount of material removed and the rub
collar size.
The cutting circle is the given in the equation,
while the pattern and the rub collar size are the
variables. Changing one or both of these will
change the amount of material removed. Planning
ahead, you can best decide which rub collars are
best suited for your application.
Template
Workpiece
Figure 54. Using a template and a rub collar for
pattern shaping.
Model G1035/G1035P (Mfg. Since 4/10)
When making a pattern, jig, or fixture, here are
a few things to consider:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Rub
Collar
Use a material that will smoothly follow the
rub collar or fence.
Secure the workpiece (on the three sides that
will not be cut) with toggle clamps, or fasten
the workpiece to the jig with wood screws.
Make the jig stable, using proven methods
and materials, and fasten the hand holds for
operator comfort and safety.
Secure the workpiece on three sides with
toggle clamps or fasten the workpiece to the
fixture with wood screws. Make sure they do
not protrude through the workpiece.
Ensure that clamps and hidden screws do not
come into contact with the cutter.
Design your fixture so that all cutting occurs
underneath the workpiece.
Always consider the cutting circle and rub
collar diameter for the correct depth of cut
when designing the pattern.
Make sure the workpiece rests flat on the
table, not on the fixture.
Remember, there is tremendous cutting force
on the workpiece. Fixtures must be solid,
stable and the workpiece must be firmly
secured.
Use care in designing and making fixtures.
Clamps and screws cannot touch the cutter,
and the fixtures must be stable in use, with
the workpiece resting on the shaper table,
not on the fixture. The workpiece must be
fixed securely to the jig.
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