Patrick-
Thank you so much!
Process is fairly simple. It’s just messy and time consuming.
If the aluminum isn’t badly scratched (think a Kirby that went up against a coffee table)
Then you’re going to start with wet sanding
800 grit
1000 grit
1500 grit
2000 grit
Arguably, you can skip 1500, but I have more than one machine to show that it helps not to.
Then follow up buffing it out with 0000 steel wool and Mothers Mag polish
I additionally use my handheld buffer with a wool pad. It really sets the shine over the edge.
Let me know if this helps, or if you’d like more detail.