1. Profile variation after sharpening.
 

1. NO variation.

2. Different cutting diameter after sharpening, consequently: longer set-up times, i.e., the rub collar must be adjusted to the new diameter.
  

2. NO diameter change. Constant diameter means no adjustments on machines.

3. Concentricity errors after sharpening, consequently: cutting quality and service life not perfect.
 

3. Constant accuracy of concentricity, therefore optimum cutting quality and maximum service life.

4. Limited carbide grade available (brazing, stress, etc.) consequently: inferior service life.
 

4. Choice of carbide grade available depending on material to be cut, therefore increased service life.

5. After carbide edges have been sharpened a number of times - either rebraze cutting edges or purchase new tool.
 

5. The cutterhead body remains virtually unchanged after years of use with minimal maintenance. 

6. Major inventory of tools - 3 to 4 identical cutters are required for uninterrupted operation.
 

6. One or two cutterheads are sufficient.

7. Expensive replacement of damaged cutting edges - new tool or re-tip.
 

7. Simply turn or replace the damaged knives.

8. Design of cutters with large gullets can cause excessive noise levels (decibels).
 

8. Closed body design helps reduce noise levels.

9. Change of balance due to incorrect resharpening
 

9. Balance is always maintained.