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CHOOSING THE CORRECT BLADE 3 Blade Width


Use the blade width recommended by the machine manufacturer, except for contour cutting in vertical machines when you should use the chart below.


1/2" 13mm 3/8" 10mm


Blade Width


4 Pitch


Pitch is the number of teeth per inch/25mm. Cutting thinner sections requires a finer pitch (more teeth per inch/25mm). Thick sections require coarser pitches (fewer teeth per inch/25mm).


6mm 3/16" 5mm


1/4"


1/8" 3mm


Radius


1/8" 3mm


5/16" 8mm


5/8" 16mm


1-1/2" 38mm


2-5/8" 67mm


The charts are good guidelines. Because the cross section limits in the chart are broad and overlap, choose a coarser pitch if the speed of cut is most important. (Choose a finer pitch if finish is most important.)


Section to be Cut (Inch) Constant Pitch (TPI) Variable Pitch 5/32" to 3/8" 1/4" to 1/2" 1/2" to 3/4" 3/4" to 1"


1" to 1-1/2"


1-1/2" to 3-1/2" 3-1/2" to 7" 7" to 10" 10" to 16" 14" to 20" 16" to 32" Over 30"


32 or 24 18 or 14 14 or 10 10 or 8 8 or 6 6 or 4 4 or 3 3 –


1.3 1.3 1


14-18 10-14 8-12 6-10 5-8 4-6 3-4 2-3


1.4-2 1-2


1-1.2 .8-1.3 / .9-1.1


For cutting tubes and profiles, use the horizontal line to find the outside diameter (tube) or the largest section (profile). Find the thickness (tube/profile) using the vertical column. With that information, cross them to find the recommended pitch. (chart below).


TUBES AND PROFILES Wall


Thickness (Inch) 3/32" 1/8"


5/32" 3/16" 1/4"


5/16" 3/8" 1/2" 5/8" 3/4" 1"


1-1/4" 1-5/8" 2"


2-3/8"


Outside diameter of tube or maximum profile section length (Inch) 3/8"


3/4" 1-5/8" 2-3/8" 3-1/4" 4"


14-18 14-18 10-14 10-14 10-14 10-14 8-12 10-14 10-14 10-14 10-14 10-14 8-12 8-12 6-10 5-8


8-12 6-10 5-8 4-6 4-6


8-12 6-10 5-8 4-6 4-6 4-6 4-6 4-6


8-12 6-10 5-8 4-6 3-4 3-4 3-4 3-4 3-4 3-4


6-10 5-8 5-8 4-6 3-4 3-4 3-4 3-4 3-4 3-4 3-4


8-12 6-10 5-8 5-8 4-6 3-4 3-4 3-4 3-4 3-4 3-4 3-4 3-4


4-3/4" 6"


8-12 8-12 6-10 5-8 5-8 4-6 3-4 3-4 3-4 3-4 3-4 3-4 3-4 3-4


8"


8-12 6-10 5-8 5-8 4-6 4-6 3-4 3-4 3-4 3-4 2-3 2-3 2-3 2-3 2-3


12"


8-12 6-10 5-8 4-6 4-6 4-6 3-4 3-4 2-3 2-3 2-3 2-3 2-3 2-3 2-3


16"


6-10 6-10 4-6 4-6 4-6 3-4 3-4 2-3 2-3 2-3 2-3 2-3 2-3


1.4-2 1.4-2


20"


6-10 5-8 4-6 4-6 4-6 3-4 2-3 2-3 2-3 2-3


1.4-2 1.4-2 1.4-2 1.4-2 1.4-2


24" 5-8 5-8 4-6 4-6 3-4 3-4 2-3 2-3 2-3 2-3


1.4-2 1.4-2 1.4-2 1-1.2 1-1.2


14


CHOOSING THE BLADE


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