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This is how the radiused edge mathed out:
Assume a bevel width of around 0.015" (my razors average around 0.008" to 0.015"). Assume a radius of 12' to 24'. The distance from the radiused bevel...

I like DMT so much I'm gonna' convert to all DMT except for one finishing hone. I might even put 'em in my avatar....

The great joy of having flat hones is that you can go from one hone to another without being forced to re-establish a new bevel on each hone. Flat hones will also give you a much faster sharpening...

The pencil mark was somewhere between 4 to 17 billionths as measured electronically with a Wheatstone Bridge. Geometric analysis agreed with the Bridge.

The rational behind drawing a second grid...

My black tape mikes out to right around 0.007".
Removing 0.007" of tape from the spine will change edge angle (per side) by about 0.5348 degrees on a 6/8 blade and about 0.4584 degrees with a 7/8...