Start With the Blade in Front of You
A worn blade carries most of the diagnosis on its own edge. Before changing supplier or grade look at what the edge actually shows.
Common Symptoms and Likely Causes
- Uniform rounding of the edge. Normal abrasive wear. A more wear resistant direction may help.
- Small chips along the edge. Often too hard a grade for the loading or an unstable mounting rather than a wear problem.
- One area worn far more than the rest. Usually alignment. The blade is not loaded evenly across its length.
- Blade running out of true. Check the bore fit the arbor and the clamping faces before blaming the disc.
- Braze seat failure on tipped blades. Look at the seat preparation and the brazing process rather than the tip.
Check the Machine Before the Blade
Spindle bearing play worn clamping faces and incorrect clamping torque produce blade symptoms that look like material problems. It is worth eliminating them first because a new blade in the same machine will fail the same way.
What to Send Us
Photographs of the worn edge taken close and in focus are more useful than a description. Add the material being cut the cutting speed the run time achieved and how the blade is clamped.
With that we can say whether the sensible change is the grade the geometry or the machine setup. See carbide blades and carbide saw tips.
