Quote Originally Posted by smythe View Post
But even if the razor is honed many times, wouldn’t the angle be the same as it was when new if the spine wears at the same rate as the edge?... assuming previous owners never raised the spine.
That is a big assumption. I took a Herder razor blank to Mike Blue's workshop and we measured the Rockwell hardness on his tester.
The edge came in at 59.8 and the spine was 54.? on the HRC scale.

I doubt that there is equal wear on most razors.

Just my $.02,