Here is a link to a great chart on grits of different materials. It includes the WEPS diamonds and the FEPA P abrasives.

www.bladeforums.com/forums/showthread.ph...ied-Grit-Chart/page3



Notice that the P1000 paper is 18 microns.
P2500 is 8.5 microns.
WEPS 1000 grit diamonds are listed at 7 microns.

I used to use sandpaper before I got stones to cover my progressions. I too noticed that the p2500 and eveb the p1000 paper would give me a much better polish and less tooth than the diamonds. I also noticed that the paper wore down much faster than I liked. I tend to think that Clay has to be right on this. The abrasive on the paper is breaking down to finer sizes. It is another example of how it is hard to choose a sharpening material simply based on the abrasive size. In fact I would go down to 0.3 micron 3M lapping paper taped to my 1000 diamonds. I never could get the level of polish nor edge refinement doing that as what I can do with the CHosera 10K which has abrasives sized at about 1.7 microns.


mark76 wrote: