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How to Choose the Correct Band Saw Blade Number of Teeth Per Inch

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 below will help you decide.

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 6000 SFM.

 

More How To's

  1. How to Choose The Correct Band Saw Blade Width.
  2. How to Choose The Correct Band Saw Blade Tooth Style and Set.
  3. How to Choose The Correct Number of Teeth Per Inch for Band Saw Blades
  4. How to Choose The Correct Band Saw Blade Length
  5. How to Diagnose Problems with your Band Saw Blade
  6. How to Install your Saw Blade.
  7. Glossary of Saw Blade Terminology