Yesterday I tried a pyramid with the Norton 4K and the Belgian blue. My 4/8 has not yet arrived.

I lapped the 4K on 1000 grit wet paper. The white stone is now stained red, but I assume that doesn't matter.

My question: how sharp is a blade supposed to be from the 4K alone?
It kept pulling on my arm hair, and it wouldn't do HHT at all.

After 2 pyramids (from 7 - 1 to 1 - 7) I did 20 laps on the yellow, and only then I noticed significant improvements.

I used a piece of coticule for raising a slurry, but it was not very thick. I don't know if that has something to do with it or not.