Workpiece Inspection; Non-Through & Through Cuts - Grizzly G0771 Owner's Manual

Workpiece
Inspection
Some workpieces are not safe to cut or may
require modification before they are safe to cut.
Before cutting, inspect all workpieces for the
following:
• Material Type: This machine is intended for
cutting natural and man-made wood prod-
ucts, laminate covered wood products, and
some plastics. Cutting drywall or cementious
backer board creates extremely fine dust
and may reduce the life of the bearings. This
machine is NOT designed to cut metal, glass,
stone, tile, etc.; cutting these materials with a
table saw may lead to injury.
Foreign Objects: Nails, staples, dirt, rocks
•
and other foreign objects are often embed-
ded in wood. While cutting, these objects
can become dislodged and hit the operator,
cause kickback, or break the blade, which
might then fly apart. Always visually inspect
your workpiece for these items. If they can't
be removed, DO NOT cut the workpiece.
• Large/Loose Knots: Loose knots can
become dislodged during the cutting opera-
tion. Large knots can cause kickback and
machine damage. Choose workpieces that
do not have large/loose knots or plan ahead
to avoid cutting through them.
• Wet or "Green" Stock: Cutting wood with a
moisture content over 20% causes unneces-
sary wear on the blades, increases the risk of
kickback, and yields poor results.
• Excessive Warping: Workpieces with exces-
sive cupping, bowing, or twisting are danger-
ous to cut because they are unstable and
often unpredictable when being cut. DO NOT
use workpieces with these characteristics!
• Minor Warping: Workpieces with slight cup-
ping can be safely supported if the cupped
side is facing the table or the fence. On
the contrary, a workpiece supported on the
bowed side will rock during a cut and could
cause kickback or severe injury.
Model G0771 (Mfd. Since 8/15)
Non-Through &
Through Cuts
Non-Through Cuts
A non-through cut is a sawing operation where
the blade does not protrude above the top face of
the wood stock, as shown in the Figure below.
Figure 41. Example of a non-through cut.
Examples of non-through cuts include dadoes
and rabbets. Non-through cuts have a higher risk
of injury from kickback because the blade guard
must be removed. However, the riving knife MUST
be installed because it still provides some protec-
tion. When making non-through cuts with a dado
blade, do not attempt to cut the full depth in one
pass. Instead, take multiple light passes to reduce
the load on the blade. A dado blade smaller than
10" will require removal of the riving knife, because
the riving knife will be higher than the blade.
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