Maybe someone has actually polished a matte bike frame. I haven’t, but I can tell you about polishing ukuleles. I have some ukuleles. I have polished the satin finish tops on a few of them; even used a car buffer on one.

I was able to get a nice gloss, but it was not the same deep gloss as the finish on my guitars and other ukes that have a sprayed gloss finish. They look like a hand rubbed gloss; which is okay for an instrument finish. The areas around the neck and bridge are difficult to polish. The back of the neck actually looks better; those who play will understand, which means maybe after 50 or 100 hours.

I can’t imagine polishing a matte bike finish, especially where the tubes meet, and getting any decent result remotely close to a painted gloss finish. And once you start you can’t go back.

John