Question: How to Select your Bandsaw Blades?

Answer: The dimension from tooth tip to back edge of the blade is the blade width.The greater the width.the greater the resistance to deflection while cutting.For straight cutting application, use the widest blade the machine can accept.For contour cutting use the widest blade that the contour radius will permit.To cut close tolerance radii the following factors must be considered:

  • blade width,
  • material thickness,
  • machinability,
  • feed force
  • location of pivot point.
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Answer: The pitch of the blade is defined by the number of teeth per inch (TPI)Nonferrous materials such as brass, bronze and aluminum require a large chip area.

A low TPI, or coarse pith, prevents the chips from clogging and binding together in the gullets. Which can diminish sawing and damage the blade.

On thin walled pipe, tubing and sheet goods, many teeth per inch are required to avoid damaging or breaking the teeth.

A low TPI blade is the best blade for cutting large cross-sections.The ability of each tooth to cut into the workpiece is increased because the saw’s feed pressure is distributed over fewer teeth.

A coarse pitch blade increases productivity and provides large chip clearing gullets.

Question: HOW to Select the Right Teeth for My Cutting Application?

Answer: Tooth selection is based on the principle that is a tooth pitch best suited for the cutting job. Blade selection should be based on the size. shape accuracy, material and cutting rate expected.

Keep in mind these numbers:3,6,12 and 24.There should be a minimum of three teeth in the work at all time for bi-metal bands and a minimum of six teeth for carbon bands. Ideally 6,12 teeth should be in contact with the work:24 teeth in the work is too many.

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Question: How to Apply Bandsaw Feeding Pressure and How Much?

Answer: Burrs and Chips talk to you what is going on with your feeding pressure and blade. Powdery or fine chips indicate that not enough feed pressure is being applied. Heavy & thick or bluish and purple burned chips mean you’re pushing to hard on the blade that indicates you are Creating too much heat and load for the teeth. Loosely curled chips tell you everything is going well like a Pro! Speed should be determined by the grade of material (this should remain constant). To obtain the best numbers adjust the pressure until desired chip formation is achieved.

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