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Band Saw Blade "Break-In" Procedure

 Home - Technical Information - Break-In Procedure


Outside of correct maintenance to your bandsaw machine, breaking in a new band saw blade is the most important step in attaining optimum blade life.  Not following this process can lead to additional expense due to lost time and excessive blade consumption.


Before we explain how to break-in a saw blade, lets take a moment to clarify what the term means by explaining how a saw blade is made.


All saw blades whether Bi-Metal or Carbon are made from flat strip stock which is milled or ground with the tooth geometry and teeth per inch depending on the number of teeth desired. The teeth on the blade are then set to the left and right in order to give clearance for the back of the blade so it does not bind in the cut.  The blade is then heat treated to the desired hardness and sandblasted or liquid honed to remove the majority of the burrs created during the milling or grinding process.  This also makes the saw blade more aesthetically pleasing to the eye.


The term "Break-In" refers to the final removal of burrs left from milling or grinding the tooth profile in the flat stock.  This is done during the actual cutting process once the saw blade is put into use.


The recommended break-in procedure is to reduce your band saw blade speed and feed rate by 20% or more for the first 100 square inches of material cut to give the blade time to hone off the minute burrs remaining.  The reason for the reduced speed and feed is to reduce the amount of vibration to the blade during this time.




You are cutting 4" diameter round 4130 Alloy Steel.  The recommended standard cutting rate is 120 feet per minute with a feed rate of 6 square inches per minute.  During break-in you should be running no more than 100 feet per minute with a feed rate of approximately 4.5 square inches per minute or less.  Cutting this material at these rates would allow for correct break-in after completing 8 pieces.