Regarding rotten stone, please direct your attention to the Bill Ellis video. He seems to be a proponent of its use on the Norton stones, particularly the Norton 4K and 8K. It is definitely more of a polishing agent as opposed to being famous for its abrasion and/or cutting ability. Those of us who have his video know that Bill has his own honing philosophy and he swears by it. We also know that he must live dead up against a busy street...!!!

As far as limestone is concerned, my guess is that the age of the limestone has something to do with the decaying process and also moisture content over time will do it to it. If you are familiar with pulverizers, gyrodisk rock crushers, hammermills and ball mills, you will easily understand how limestone can become rottenstone dust.

I guess we've beaten this one to death, huh??!!! JERRY______