What is toothbite?

Tooth bite is the chip load per tooth, or the ‘distance’ that each tooth advances through the wood in one saw revolution.

What is a normal toothbite?

Tooth bites vary based on many factors. The following table shows the normal and average range.

 NORMAL RANGE  AVERAGE TOOTHBITE
 GUIDED EDGER SAWS  .020“ – .060“  .045“
 STROB SAWS  .025“ – .045“  .035“

What is saw peripheral speed?

Peripheral speed is a measure of the distance a point on the rim of the saw would ‘travel’ if you were to unroll it into a straight line rather than letting it move in a circle. It is different from RPM, which is the number of times per minute that the saw rotates.

What is a normal peripheral speed?

Peripheral speeds vary based on many factors including the degree of safety of the mill. The following table shows the normal and average range.

 COMMON RANGE  AVERAGE
 GUIDED EDGER SAWS  12,000 – 18,000 FPM  14,000 FPM
 STROB SAWS  10,000 – 14,000 FPM  12,000 FPM
 TRIM SAWS  10,000 – 18,000 FPM  15,000 FPM

What causes sawing deviation?

Many factors can contribute to deviation, such as:

  • Tooth Bite too high
  • Tooth Bite too low
  • Gullet too small
  • Gullet too large
  • Guides worn or out of tolerance
  • Mill misalignment
  • Feed Rolls mis-timed

What causes waves / poor finish?

There are many factors such as:

  • Too few Teeth
  • Feed Rate too high
  • Tooth Bite too high
  • Worn bearings causing vibration
  • Guides worn or out of tolerance
  • Harmonics from Saw Blade
  • Insufficient  Tension