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Yes this is correct.
wider the blade thicker the spine in simple words?
as you hone your wear down spine and the edge same time.
angle stays same.

Ok i think i am getting slowly what you are trying to ask.
i think you are trying to find out the best spine to edge angle.
which is between 16-20 degree and if am not mistaken 16,5 is the best....

The more hollow the blade narrower the edge[/QUOTE]
Sorry it is not.

Are you trying to ask width of the bevel? or the blade?

there is differences between bevel and edge.
Edge is cutting edge which cuts the hairs.
Bevel has nothing to do with cutting .
i hope i was clear.

I may misunderstand your question .
cutting edge has nothing to do with grind of the blade?