Originally Posted by
kevint
From what I have read dulling on glass would do no harm. It simply prevents a false positive at setting, as stated iirc when Bart first described its use.
Jointing is slightly different. I think Sham described it quite well.
It may not occur on all razors with all honing methods, but I do feel that chips beget chips. By lightly polishing the edge it is possible to achieve a similar result as is necessary when honing single bevels- the back side must be flat, high polish. When the bevels meet there are no residual nicks or scratches or hanging burs to interfere.
It would take a fairly long time to establish if such a practice leads to a longer lasting edge. As well, finishing on pasted strops may eliminate any advantage.
I think that last point is crucial, to evaluate any honing method or stone you have to eliminate the paste effect, or you are only evaluating the paste effect.