Bandsawing Problems & How to Solve Them

tec-saw-inner1080x270

Remember there are many factors that can cause a bandsaw to cut incorrectly. Here are a list of reasons:

ProblemCauseRemedy
1. Premature dulling of teeth on a bandsaw bladeSaw idling through cut.


Teeth on bandsaw blade too coarse.

Incorrect coolant or coolant improperly applied.

Bandsaw teeth running in wrong direction.

Excessive speed for material being cut.
Increase tooth load by increasing feed or reducing speed.

Select finer teeth.

Check amount, type and mixture of coolant.

Refit band correctly.

Reduce speed.
2. Bandsaw blade vibrating in cut.Unsuitable speed for material and thickness.


Excessive feed/pressure.

Work not held firmly.

Teeth too coarse.

Incorrect type of tooth.


Insufficient blade tension.
Increase or decrease according to section, size and type of material.

Decrease feed/pressure.

Re-clamp work firmly.

Select finer teeth.

Select correct type of tooth for material being cut.

Increase tension.
3. Band saw blade teeth ripping outTeeth too coarse.

Work not held firmly.

Sawing dry.

Gullets of teeth loaded with swarf.

Excessive feed/pressure.

Band teeth encountering sharp corner on material being cut.
Select finer teeth.

Re-clamp work firmly.

Apply cooling.

Use coarser teeth.

Reduce feed/pressure.

Present a flat surface to the band when starting to cut.
4. Bandsaw blade cutting out of square Maladjustment of band saw guides.

Uneven wear of tooth set caused by hard inclusions in material being cut.

Band saw blade nearing end of life.

Maladjustment of work vice relative to band.
Realign bandsaw guides - replace if worn.

Decrease tooth load by reducing pressure or selecting finer teeth.

Replace with new band saw blade.

Check square-ness of band to vise.
5. Slow steel cutting band saw rateBandsaw blade speed too slow.

Insufficient feed/pressure.

Teeth too fine.

Lack of coolant.

Bandsaw blade nearing end of life.
Increase bandsaw blade speed.

Increase feed rate/pressure.

Select coarser teeth.

Increase supply of coolant.

Replace with new bandsaw blade.
6. Premature breakage of bandsaw bladeCracking at the weld.

Blade guides too light or are misaligned.

Tension is too great.

In profile sawing band width too great for radius being cut.

Teeth too coarse.

Excessive feed rate/pressure.

Bandsaw blade speed too high.

Bandsaw blade too think in diameter of drive wheels, or defective wheels.
Check welding technique.

Re-adjust guides.

Reduce tension.

Select narrower bandsaw blade.


Select finer teeth.

Reduce feed rate/pressure.

Reduce band saw blade speed.

Use perifery of drive wheels.
7. Bad surface finish on the workpieceTeeth too coarse.

Bandsaw blade speed too slow.

Feed rate too great.

Defective machine.

Lack of coolant.
Select finer teeth.

Increase bandsaw blade speed.

Decrease feed rate.

Examine moving parts on machine.

Increase coolant supply.
8. Premature loss of tooth set on band saw bladeIn profile sawing, bandsaw blade too wide for radius being cut.

Bandsaw blade speed too great.

Bandsaw blade running too deep in guides.

Lack of coolant.
Select narrower band saw blade.


Decreae bandsaw blade speed.

Adjust guides.

Increase coolant supply.
9. Bandsaw blade teeth choked with swarfTeeth too fine.

Lack of coolant.

Incorrect type of tooth.


Feed rate too great.
Select coarser teeth.

Increase coolant supply.

Select correct type of tooth for material being cut.

Decrease feed rate.
10. Bandsaw blade not running true in guidesMisaligned weld.

Drive wheels misaligned.

Band guide back support bearing worn.

Side guides misaligned.
Check welding equipment and re-weld.

Check alignment of drive wheels.

Adjust or replace.

Adjust correctly.
11. Saw making a bow shaped cutInsufficient tension.

Teeth too fine.

Bandsaw guides worn or misaligned.

Feed rate too great.
Increase tension.

Select coarser teeth.

Adjust or replace.

Decrease feed rate.
12. Bandsaw blade jamming in cut.Back edge of bandsaw blade flattened by guides.

Insufficient tension.

Loss of tooth set on bandsaw blade.

Movement of work piece.

In profile sawing, incorrect bandsaw blade width for radius being cut.

Cutting out of square.
Readjust guides and/or reduce feed rate.

Increase tension.

See heading #8

Re-clamp firmly.


Select narrower band saw blade.


See heading #4