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blade break-in
proper break-in is important for the cutting per-
formance and longevity of the blade. during the
break-in period, only mild pressure should be
exerted on the blade (about half of the normal
feed pressure for a properly broken-in blade).
the duration of the break-in period is determined
by the hardness of the material cut. the break-
in period is defined in terms of square inches of
material cut.
—For hard materials, such as steel, the
break-in period is the first 50 square inches
of material cut.
—For soft materials, such as aluminum,
the break-in period is the first 150 square
inches of material cut.
to determine the square inches of a cut, calculate
the area of the cross-section of the workpiece.
Keep in mind when cutting hollow-section pieces
that the area only includes the solid walls of
the workpiece. refer to figure 41 to calculate
approximate square inches for many typical cuts.
A = L x H
H
L
)² x π
D
A = (
⁄
2
D
D x π x Th
Th
A
Th
A
2H + 2L x Th
H
L
figure 41. Calculating cut area for break-in.
g0682 12" Cold Cut saw (mfg. since 12/10)
A =Area
H =Height
L =Length
D =Diameter
Th =Material
Thickness
π =3.14
blade Changes
The teeth of saw blades
are sharp and can easily
cut fingers and hands.
Always wear heavy leath-
er gloves when handling
saw blades.
Tools Needed:
hex Wrenches 5, 10mm ..............................1 ea.
To replace the blade:
1.
disCoNNeCt saW From poWer!
2.
disconnect the blade guard linkage by remov-
ing the cap screw that connects it to the saw
guard (figure 42).
blade guard
Cap screw
linkage
arbor Cap screw
figure 42. removing guard linkage.
Qty
-27-
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