When testing a razor on my arm hair after honing or stropping, I can generally predict how sharp the edge will be before it actually touches a hair. As the edge moves near my arm hair, I get a slight sensation of static where the hair is attracted or repelled by the edge. If I feel this slight static, the razor will easily pop arm hair well above the skin. If I don't feel it, it won't. The sharper the edge, the more noticeable the static, even though it's still very slight.

Has anybody else noticed this? Any idea why this happens? If it was just static build-up from friction alone, it seems a dull razor would do the same thing, but it doesn't.

Thanks