Mirror finish on aluminum 6061
Hi everyone. Do you know if it's possible to polish 6061 aluminum to a mirror finish? I'm trying to make a pendant. I've tried sanding in circles, sanding with the grain, and cross-sanding. I've sanded all the way up to 2000-grit. I always make sure to thoroughly clean both the piece and the sandpaper before sanding. I've polished both by hand and with a bench polisher. I've used Dialux Orange, Tripoli, and white polishing compounds, but none of them remove the 2000-grit sanding marks (using the bench polisher). Nothing has worked for me. Even though the scratches are parallel, they are still far too visible. I'm starting to think a mirror finish on aluminum isn't achievable. Should I try BlueMagic or some kind of car polish?
Thanks in advance for your answers.