As I'm looking at a pair of Wilson's Coronation Ace parabolic blades, I'm noticing they both curve very, very slightly inwards. They're not just 0.4 mm thinner in the middle - they seem to be curved on one side more than the other. Or, more correctly: they seem to be concave only on the inside edge; the outside edge seems more or less straight. I only have a straight steel ruler to align them against, but it does seem to rest flush on the outside, while leaving a tiny space on the inside.
If I'm right, then sharpening them as if they were straight may create a higher edge on one side!
So - is this normal, or do I have a flawed pair on my hands, or could they have gotten damaged due to improper mounting and/or usage?
If I'm right, then sharpening them as if they were straight may create a higher edge on one side!
So - is this normal, or do I have a flawed pair on my hands, or could they have gotten damaged due to improper mounting and/or usage?