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