Choose the Correct Blade Width
The number of teeth per inch
(TPI) is important in obtaining
the finish desired and the proper
feed rate. A coarse tooth blade
(2, 3 TPI) should be used for
resawing wood and cutting
thicker stock up to 8″. A fine
toothed blade (18 to 32 TPI)
should be used for thinner
metals and plastics under 1/4″.
For general cutting of 3/4″ wood
4 TPI will provide a fast cut and
14 TPI will cut slow but leave a
smoother finish.
When Selecting TPI remember:
• More TPI give a smoother but slower cut
• Fewer TPI allow a faster cut with a slightly
rougher finish
• At least three teeth must be in the workpiece—
the chart above will help you decide.
Regular Tooth The most commonly used tooth
shape. Ideally suited for both cut-off and contour
sawing of most materials. For cutting thin
materials where a fine cut is required.
Skip Tooth
Widely spaced teeth with a 0
o
rake
angle to prevent clogging when cutting soft,
non-ferrous metals, plastics and wood.
Hook Tooth Positive 10
o
rake angle helps to
“dig-in”, resulting in a higher cutting rate.
Recommended for long cuts into thicker wood,
plastic and metal.
Raker Set tooth consists of one to the left,
one to the right and one tooth (raker) is unset.
This set is used for cutting thick, solid metal
sections on horizontal cut-off machines. It is also
used for contour cutting and resawing on vertical
band machines.
Modified Raker Set tooth pattern is left,
right, left, right, and straight (unset or raker).
Excellent choice for cutting wood on any 2-wheel
vertical stationary band saw. Not available for
every tooth and blade type.
Alternate Set
or double alternate plus raker
set blades are designed for cutting wood.
Provides faster, smoother cuts.
Wavy Set
pattern has groups of teeth set to the
left and to the right, separated by unset raker
teeth. It is made primarily with small teeth and is
recommended for cutting thinner sections–tubes,
pipes, thin sheets and other small shapes.
32 TPI only.
Choose the Correct Number of Teeth Per Inch (TPI)
It is important to know the SFM for the various
speed settings of your band saw, so that you can
select the proper speed for cutting wood or other
materials. Check the operator's manual of your band
saw to determine the SFM or use the
following procedure:
1. Determine the RPM: check the operator's
manual or clock the revolutions per minute of the
wheels with a tachometer or revolution counter.
2. Measure the diameter of the drive wheel in
inches and multiply by .262 to obtain the wheel
circumference. The RPM times circumference equals
the surface speed of the blade.
RPM x diameter in inches x .262 = SFM.
Note: Olson Spring Steel Wood Cutting Band
Saw Blades should never be operated at surface
speeds above 3000 SFM. Olson Carbon Hard Edge
Flexible Back Band Saw Blades may
be run up to 8000 SFM.
Blade Width - Inches
1
3/4
5/8
1/2
3/8
1/4
3/16
1/8
Minimum Radius - Inches
75
1
⁄
2
42
1
⁄
2
1
1
⁄
2
5
⁄
8
5
⁄
16
3
⁄
16
Minimum
Material
TPI Thickness
32 3/32″
24 1/8″
18 5/32″
14 1/4″
10 5/16″
8 3/8″
6 1/2″
4 3/4″
31″
21
1
⁄
2
″
If no such instructions are provided, blade width
s
hould be determined with the following guidelines:
For Cut-Off Sawing the blade should be as wide
as the machine will allow. The wider the band is, the
straighter the cut will be. Faster feeding can
be achieved.
For Contour Sawing the blade should be as wide
as the machine allows, but still narrow enough so
that it can cut the desired shape (radius). Minimum
dimensions for different cutting radii are shown
on the chart at right.
Blade width is measured from the tips of the teeth
to the back edge of the blade as shown at right. The
instructions for the particular machine being used
should be followed when selecting blade width.
Choose the Correct
Tooth Style and Set
How-To’s
for all Band Saw Blades
OLSON
Band Saw Blades
®
Note: Rockler may not carry all products and/or sizes listed in this vendor's publication
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