Thanks. I used to make aluminum cold air intakes for cars and I had to polish raw 6061 aluminum tubing. I buit the machine that turned the pipe and plished it but like you said, it had tell tale signe of a power job.
It's alot like that but by hand and taking care to take my time. I might give this a try on some spare metal I have laying around before I take the plunge on one of these. lol