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Yep, ya got it. That's why you come here, for advice, tips, tricks, and the like. I had a bugger of a time leaving the spine dead flat and not lifting the edge up on the stroke because of it, old...

No you don't have to calculate angles or anything (unless it's an antique or used with some bad hone wear), just laying the spine and keeping it flat on the stone sets the bevel angle where it needs...

How did you go about it (stones, film, grit rating, yada yada)?