Hi JFred, thanks for the compliment.
This is what I did and it may or may not be the textbook correct version, but here goes.
The aluminum was painted, so I used the same paint stripper I used on the wood (Citristrip) It took most of the paint off.
Then I scrubbed what paint was left with synthetic steel wool. It was pretty coarse.
I found someone in another thread who said Easyoff oven cleaner worked for the cleaning further, so I did that and got a lot of oxidation off.
Then I used an automotive sandpaper (600 grit) to take the deep scratches out and give an even surface.
Use steel wool to get even smoother finish (00)
I bought a denim buffing wheel and put on my lathe. It really didnt do much, so I added some buffing compound and it started shining up nicely.
Lastly, I used paste for metal polishing and buffed on a cotton wheel.
Also, you cant see from where I took the pic, but the leftmost apron corner casting is scuffed beyond repair if anyone has one for sale at a good price. Otherwise, I'll just live with it.