You can polish it yourself though. I think Tru-Turn has directions on their website that are directly contrary to what I'm about to tell you. Either way works.

I just chuck it in a drill or drill press and use progressively finer grades of wet or dry paper and soapy water (electrical shock hazard here- be careful!). You can use the paper dry but you'll go through a lot more of it.

Then I use polishing compound to finish it off. Usually takes an hour or so to get a high polish on it.