23° knife ground with a cone abrasive = 10° back grind |
24° knife ground with a cone abrasive = 9° back grind |
25° knife ground with a cone abrasive = 8° back grind |
26° knife ground with a cone abrasive = 7° back grind |
27° knife ground with a cone abrasive = 6° back grind |
28° knife ground with a cone abrasive = 5° back grind |
29° knife ground with a cone abrasive = 4° back grind or 13° with a drum abrasive |
30° knife ground with a drum abrasive = 12° back grind |
31° knife ground with a drum abrasive = 11° back grind |
32° knife ground with a drum abrasive = 10° back grind |
33° knife ground with a drum abrasive = 9° back grind |
34° knife ground with a drum abrasive = 8° back grind |
35° knife ground with a drum abrasive = 7° back grind |
36° knife ground with a drum abrasive = 6° back grind |
37° knife ground with a drum abrasive = 5° back grind |
38° knife ground with a cone abrasive = 13° back grind or 4° with a drum abrasive |
39° knife ground with a cone abrasive = 12° back grind |
40° knife ground with a cone abrasive = 11° back grind |
41° knife ground with a cone abrasive = 10° back grind |
42° knife ground with a cone abrasive = 9° back grind |
43° knife ground with a cone abrasive = 8° back grind |
44° knife ground with a cone abrasive = 7° back grind |
45° knife ground with a cone abrasive = 6° back grind |