One thing I noticed when doing the powder thing, is that jumping from lower frit levels to higher grit levels doesn't really matter that much since the powders are really aggresive, had to put them on a leash. In my experience it wasn't worth using since its kinda dirty and also someone told me that the grit gets imbedded on the blade which is kinda scary. If someone is interested in purchasing powders metal master on ebay has them up to 30k.