sharpening angle for rat 2

[TheGrailKnife]

My rat 2 is getting a bit dull and I'm going to sharpen it on my sharpmaker. I just what to know the angle, should it be 15 or 20

 

[Jason B.]

The rule of thumb for any sharpening is to go as low as you can for the tasks YOUR knife performs. Most all knives will handle 30 inclusive just fine.