This is an old article that is out of print as far as I can tell. It’s from from the September 2003 issue of Model Airplane News. I’m attaching a pdf file of it because the links I find seem to disappear. I’m also including a link I recently found.

Here’s another article as well: Polishing an aluminum spinner - RC Groups
(Note this is also an old article. The text is still there but the pics are gone.)

polish_1.pdf (952 KB)

polish_2.pdf (814 KB)

Best bet is to download the PDF articles from here…