fbpixel

22 Variables

Download a full presentation of this practical overview of band sawing basics. (PDF)

Summary

  1. The Operators – The largest variable
  2. The Number of Teeth in the Band – 3 minimum, 6-12 optimum, 24 maximum
  3. Tooth Style – Standard, Skip, Sabre, or Variable Pitch.
  4. Tooth Set – Regular, Wavy, Every Tooth Set, or Modified Raker.
  5. Band Tension – Measured with the patented Simonds Simometer.
  6. Band Speed – Start with the manufacturer’s recommendation.
  7. Break-In Procedure – Reduce normal feed rate by ½
  8. Feed Rate – Set rate by square inches per minute suggested by manufacturer
  9. Band Quality – Carbon vs. Bimetal or Carbide Tipped, one brand vs. another.
  10. Machine Type – Different makes and models, horsepower of motor.
  11. Wheels – Check alignment, bearings, flanges.
  12. Machine Condition – Old, new, well-maintained.
  13. Proper Vises – To hold the work firmly.
  14. Guides – Should support the band, roller guides should barely turn by hand.
  15. Guide Arms – Should be as close to the work as possible for support.
  16. Brushes – Aid in the cleaning chips from the gullet of the band
  17. Coolant – Should wash, cool and lubricate
  18. Material Machinability – The toughness of a metal can reduce tool life.
  19. Material Hardness – A Rc of 40 has a machinability approaching 0.
  20. Material Shape – Structural and small solids tend to be harder on the band.
  21. Production Requirement – Continuous vs. intermittent use.
  22. Room Temperature – Affects hydraulic fluids in the machine.
  23. Any one variable or any combination of the above variables can affect band saw life!