Hi Kutch & Swong. Welcome to the Spyderco forum.
As Paul mentioned (thanx), it would be cost prohibitive to make an ultra fine at this time. We could make up a different ceramic forumla and try to achieve the finer grit that way, but I don't think the demand would support the costs.
We have a source for the steel triangle rods, we're still investigating diamond platers. It's still encouraging.
sal
[This message has been edited by Sal Glesser (edited 05-08-2001).]