Way Train 250S, Instruction Manual

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7. MAKE PROPER TOOTH SELECTION
For maximum cutting efficiency
and lowest cost per cut, it is important to
select the blade with the right number of
teeth per inch (TPI) for the material
being cut. The material size and shape
dictate tooth selection.
TOOTH
SELECTION
You need to consider:
The width of the cut - That is, the distance in the cut that each tooth must travel from
the point it enters the work-piece until it leaves the work-piece, and
1.The shape of the work-piece.
Squares, Rectangles, Flats (Symbol :
■
)
Locate the width of cut on the chart. (Inches on the outer circle and
millimeters on the inner circle.) Select the tooth pitch on the ring marked
with the square shape which aligns with the width of cut.
EXAMPLE: 6" (150mm) square, use a 2/3 Vari-Tooth.
Round Solids (Symbol :
●
)
Locate the diameter of your work-piece on the chart. Select the tooth pitch
on the ring marked with the round shape which aligns with the size of stock
you are cutting.
EXAMPLE: 4" (100mm) round, use a 3/4 Vari-Tooth.
Tubing, Pipe, Structural ( Symbol : O H ^ )
Determine the average width of cut by dividing the area of the work-piece
by the distance the saw blade must travel to finish the cut. Locate the
average width of cut on the chart. Select the tooth pitch on the ring marked
with the tubing and structural shape, which aligns with the average width
you are cutting.
EXAMPLE: 4"(100mm) outside diameter, 3"(75mm) inside diameter
tubing.
4"(100mm) OD =12.5 sq.ln. (79cm
2
)
3"(75 mm ) ID = 7.0 sq.ln. (44cm
2
)
Area = 5.5 sq.ln. (35cm
2
)
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