Quote Originally Posted by mrsell63 View Post
Is there a difference between the old standard chosera 1k or the newer Naniwa Chosera "Professional" 1k stone?
The Pro 1k is the one you used at my bench.

I couldn't get the job done on my SS 1k.
I tried your standard, and the edge jumped out at me. I then ordered the Chosera and received the Pro.
Having only used the standard that once, and not being experienced enough, I can't comment on the difference.