Search:

You can always not push it all the way down. if you have a clear glass, experiment to find the pressure where the bevel contacts the glass.

This is of course a very good point. The large radius arc, will create a slight convex to the razors edge bevel. When put against a flat stone, it should become noticable under magnification at...

And as for scratches, I do not see how they matter as long as the surface is overall flat to the bevel. Bevels are thin, but microns are even smaller. Dont forget the fact that In the case of the...