I didn't say they were necessary. If you want the angle to stay the same with equal pressure, then identical surface area would be necessary. This assumes identical material and Rc at all points of contact. That's a big assumption. None of us apply equal pressure anyway, so it's a moot point.
The change that occurs over a long period of use is negligible. This assumes reasonable honing and maintenance. You're Grandson can use the same razors that you do. With no change in comfort. Many members do use razors over a hundred years old, with a high degree of satisfaction.
Calculus applies? Which formula would that be? Which Geometry formula guarantees what angle? There are way too many variables here for either.Quote:
Disregarding chaff interference, equal pressure, angle and identical surfaces guarantees equal wear for any given point. Calculus applies that across the entire blade (that is in contact) and Geometry guarantees that the angle is therefore maintained. Now the question of maintaining equal pressure raises issues, but even given the disparity in gravitational pressure, due to the hardness of steel and shape of most blades this effect should be minimized (bringing us back to your point about it not being exactly perfect either way).
Equal pressure on both surfaces? Gravitational pressure? I'm pretty sure you're trying to track quantities that you can not measure, let alone duplicate... You're making this way too complicated. What we're all trying to say is that tape does not mess up your razor. Tape applied to a razor before you buy it will not mess it up, either. Tape doesn't mess up a shaving edge. Only bad honing or damage of some other kind does.
Uh-oh, I gotta' go change my signature now. I see I've been spelling my name wrong for months... :eek:Quote:
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EDIT: darn it Jimmy, you almost made me spew V-8 juice all over my monitor...