DeWalt DC351 Manual De Instrucciones página 19

support the blade and minimizes twisting and pinching in the
material. See the section titled Cutting Depth Adjustment.
3. BLADE TWISTING (MISALIGNMENT IN CUT)
A. Pushing harder to cut through a knot, a nail, or a hard grain
area can cause the blade to twist.
B. Trying to turn the saw in the cut (trying to get back on the
marked line) can cause blade twist.
C. Over-reaching or operating the saw with poor body control
(out of balance), can result in twisting the blade.
D. Changing hand grip or body position while cutting can result
in blade twist.
E. Backing up the saw to clear blade can lead to twist.
4 MATERIALS THAT REQUIRE EXTRA ATTENTION
A. Wet lumber
B. Green lumber (material freshly cut or not kiln dried)
C. Pressure treated lumber (material treated with preservatives
or anti-rot chemicals)
5. USE OF DULL OR DIRTY BLADES
Dull blades cause increased loading of the saw. To compensate,
an operator will usually push harder which further loads the
unit and promotes twisting of the blade in the kerf. Worn blades
may also have insufficient body clearance which increases the
chance of binding and increased loading.
6. LIFTING THE SAW WHEN MAKING BEVEL CUT
Bevel cuts require special operator attention to proper cutting
techniques - especially guidance of the saw. Both blade angle
to the shoe and greater blade surface in the material increase
the chance for binding and misalignment (twist) to occur.
7. RESTARTING A CUT WITH THE BLADE TEETH JAMMED
AGAINST THE MATERIAL
The saw should be brought up to full operating speed before
starting a cut or restarting a cut after the unit has been stopped
with the blade in the kerf. Failure to do so can cause stalling and
kickback.
Any other conditions which could result in pinching, binding, twisting,
or misalignment of the blade could cause kickback. Refer to the
sections on Adjustments and Set-Up and Operation for procedures
and techniques that will minimize the occurrence of kickback.
Blades
WARNING: To minimize the risk of eye injury, always wear
ANSI Z87.1 approved eye protection. Carbide is a hard but brittle
material. Foreign objects in the work piece such as wire or nails
can cause tips to crack or break. Only operate saw when proper
saw blade guard is in place. Mount blade securely in proper
rotation before using, and always use a clean, sharp blade.
WARNING: NEVER cut ferrous metals (those with any iron or
steel content), masonry, glass or tile with this saw. Damage to the
saw and personal injury may result.
A dull blade will cause inefficient cutting, overload on the saw
motor, excessive splintering and increase the possibility of kickback.
Change blades when it is no longer easy to push the saw through
the cut, when the motor is straining, or when excessive heat is built
up in the blade. It is a good practice to keep extra blades on hand
so that sharp blades are available for immediate use. Dull blades
can be sharpened in most areas; see SAWS-SHARPENING in the
yellow pages. Hardened gum on the blade can be removed with
kerosene, turpentine, or oven cleaner. Anti-stick coated blades can
be used in applications where excessive build-up is encountered,
such as pressure treated and green lumber.
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