I was wondering if anyone has experimented with this. I, from time to time have started a yellow slurry on a bbw to increase it's cutting power. I have also use the blue slurry on the yellow, then yellow slurry, then water..Sorry, I messed up earlier...Normally, I keep my host hone and slurry the same. Except, With Coticule, it just seemed natural to do. Anyone else?