What Is Chip Clearance?
Chip clearance refers to the space available in the gullet (the curved space between teeth) for sawdust chips to accumulate and be carried away from the cutting zone. Without adequate clearance, chips pack between teeth, causing overheating, burning, and reduced cutting efficiency.
Why Chip Clearance Matters
As each tooth enters the material, it removes a chip of wood. That chip must go somewhere:
- Adequate clearance: Chips curl into the gullet and are carried out of the cut
- Insufficient clearance: Chips pack into gullets, teeth recut the same chips, heat builds up
Gullet Design Factors
| Factor | Effect on Performance |
|---|---|
| Gullet depth | Deeper gullets hold more chips |
| Gullet width | Wider gullets allow faster chip evacuation |
| Gullet shape | Optimized curves reduce chip packing |
| Tooth spacing | More space = better clearance |
Chip Clearance by Tooth Count
| Tooth Count | Chip Clearance | Best For |
|---|---|---|
| 24T | Excellent — large gullets | Thick stock, ripping |
| 40T | Good — adequate gullets | General purpose |
| 60T | Moderate — smaller gullets | Thinner materials |
| 80T | Limited — small gullets | Sheet goods, thin stock |
Signs of Insufficient Chip Clearance
- Blade burning wood
- Excessive heat generation
- Slow cutting speed
- Wood chips packing in the cut
- Increased motor load
Conclusion: Balance Clearance with Finish Quality
More teeth produce smoother cuts but reduce chip clearance. Fewer teeth provide excellent clearance but rougher cuts. The right balance depends on your material thickness and cut quality requirements.
At JKINGS Tools, our TCT saw blades feature optimized gullet designs that maximize chip clearance for each tooth count. Contact us for blade selection based on your chip clearance needs.
