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If you do have a frown, (blade width narrower in the middle than the heel and toe), you must reprofile the edge straight, so the blade width is the same from heel to toe.

To do so, you grind the...

What does the other side look like? Chances are it is the opposite and the razor has a slight warp, most do.

The width of the bevel does not matter, as long as the edge is straight and honed fully...