Originally Posted by
hoglahoo
Now, a dull razor is one that is rounded at the edge, is it not? If however, one bevel is not making hone contact all the way to the edge, that side of the edge is going to be unpolished and remain rounded. The other side may sharpen just fine, but the rounding on the dull side will prevent any angle of attack from being capable of cutting hair with any ease. If I cut an egg in half, you'll see a sharp divide if you look from the side which was cut, but you'll see a gradual roundedness from the other side of the egg, as though it was never cut at all.