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I need to learn more about this for custom straight razor making purposes.

I'm well aware that my question is hard to answer and also depends on steel type, shoulder type and personal preference. I nevertheless believe, if bevel width is in question, other parameters are...

You got my question correct but I disagree that the difference is small.

Hi,
The angle is around 15 degrees so let's keep it constant in order to simplify/model the problem. Thanks for the help.

I assumed blade spine thickness varies so as to keep the bevel angle at a constant value, say 17 degrees.

Hi,

Ok I see now. But a 8/8 wouldn't have twice the width of a 4/8.

How can I formulate it?

Hi,
I mean bevel, I don't think bevel width can be chosen arbitrarily so my question came from it.

Ok let me put a crude classification here:

Hollowness:
full wedge:A
1/4 hollow:B
1/2 hollow:C
full hollow: D

blade width:
15 mm(or 5/8) = a

I agree with the first part but couldn't understand the second part.

I think they counter act(not sure this is the correct word). The more hollow the blade narrower the edge width should be so that bevel flexes in desired amounts during use.

Hi,
What widths of cutting edge would be proper for full wedge, 1/4 hollow, 1/2 hollow, full hollow razors? Let's say blade widths are a, b, c, d. I believe it's non-linearly proportional to blade...