jrjr2u,

I ran short on time this afternoon so I did a quick buff / polish on a a small section of a Mac25 case.
I've attached 4 pics below.
The first one is the original surface.
The second one is the surface after a buff with black emery on a 3600 RPM cotton wheel.
The third and fouth pics are of that same surface after a polish with 1200 grit rouge on a 3600 RPM cotton wheel.

I'm not aware of any chemical means that would allow you a polished finish without mechnical buffing / polishing. Chrome or nickel plating might acheive your goal but certainly would add expense. You could check with Caswellplating.com. They have an excellent tutorial on polishing and will sell you top quality plating chemistry and supplies.