[mpierich]

If you do each step in a different direction (90 degrees if possible) you should be able to tell which step is leaving the lines.

I've been doing this for a number of years, and sometimes there's no way to get some alloys perfect. Chrome plating (or stainless) looks perfect because it's a hard metal and so can be polished smoother.

P.S. - the sisal is probably not a good idea, and could be the culprit. It's pretty aggressive.