Comment for beginners... about "dull on a glass"
Ouch... there are reasons to do the dull on a glass thing
yet it is not something that should be done to a worthy razor
you are shaving with.
The amount of steel you have to hone away and the resulting
chips on some blades makes this a parlor trick for honing contests
and on occasion hone evaluations. It is not something a beginning
shaver should play with when the goal is to shave.
This thread is very interesting. Coti hones are natural and vary
a lot. The Na12K is a worthy hone and is both fast and fine to the
point that it could be used lightly on Saturday afternoon to put a
smooth sharp edge on a razor for the rest of the week. Heck the
next month or two.
A prize coti is well "a prize" and for some there is no better edge.
I used mine under water only for decades... no flat lap no rubbing
stone...
If you have both -- the shave test will tell you
what you need to know. Me I had fallen in love with a Na12K followed
by a grey canvas (dirty) and clean leather. Lately
I have been slow dancing with an 8K snow white hone...