Looking for some advice using my Multi-tool and the polishing belt.. I normally get very good results bringing older irons to life as well as taking a satin finish to a bright mirror finish. Often times I end up with a black residue on the iron head that I need to hand buff off. I am using the white polishing compound (white) on the belt (MT0006). Essentially creating an additional step in the process. I also use the buffing wheel with the black compound.
I talked to Pete Callaway, our resident expert on anything that has to do with polishing (among many other things) and he said it’s as simple as finishing on the down stroke. When you are polishing, the last stroke needs to be quick and downward. That should remove most of the black residue. Anything remaining you should be able to wipe off with our finger. The belts and compounds you are using are fine.