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The whole concept of either using glycerin or just using plain water is to increase viscosity with glycerin so there is less contact with the hone.

If lather works, then that whole concept is to...

This doesn't make sense to me. Soap breaking the surface tension, it would seem to me, provides greater contact with the hone and therefore should result in a coarser finish.

Glycerin, it seems to...

I did the same thing with my Cnat. I can't say how much it does but I'm shaving directly off the Cnat (with plain leather stropping of course) now whereas I was going to pasted strops after that.
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