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[QUOTE=Jimbo;1055626]I'm not sure how it is simpler - using arctan instead of arcsin is just changing a button on the calculator. Again, the formula Glen gave looks more complicated than it needs to...

The way I have heard it told is that, the hardening is the other way around actually, ie: the edge is hardened better to hold the edge and as you move higher into the belly the steel is softer so it...

No Gugi and Hoglahoo posted the Math long ago you don't need to do anything other than simply plug that formula into Google and Voila' magic happens

The hope is to hit as close to 16 as possible,...

Here is the math


(2 * asin(w / (2 * h)) * 180) / pi = a


w = Width of the spine
h = Height of the blade
a= Bevel angle