I have used the recipe for chromium oxide paste that was described by Vadim and it worked very well. I did use it on a Tormek leather wheel. I just want to mention that he recommended refined linseed oil. The common linseed oil used by wood workers is boiled linseed oil. Vadim, such a perfectionist, would not have put in that detail if it was not important. The refined linseed oil is much lighter in color.