GOOD THREAD IDEA! i have been researching this for a while. I read some how to articles, grew some balls, went to sears and bought a 'metal polishing kit' (attachements for a dremel and some powder), and tested it on my brand new C&L mass-air meter. The results were not good. I could have got the same finish using polish, but instead i spent 1.5 hours in the garage grinding away at this thing according to the directions. After step 1 it looked real shiny but the instructions demanded not to stop there.

by stage three the thing was the same as when i first bought it but now it has little shiny lines all over it

. i think it waas the cheap bits i bought but im not sure. you are supposed to finish with a 2000 grit sandpaper, but none of the sanding bits were labeled so i used the softest one
ps-anyone wanna buy a polished' C&L meter???