I like what you've done. I was looking in a tool supply catalog recently and saw they have the scotch brite wheels to use for buffers. I have a scotch brite belt for my 2"x72" grinder and I've found that the evenness in scratch pattern looks closest to factory satin finish that I've seen from a buffer or grinder. I don't have any pics to illustrate at the moment but the scotch brite belt is a great tool. I wonder if the wheel would be a great tool as well for satin finishes.

I'm a fan of satin finish vintage blades.

Chris L