Removing corrosion from aluminium?

[SturdyHSV]

Apologies if this is a topic that's been done to death, I have some (formerly) polished rocker covers that have succombed to corrosion, I thought perhaps some autosol would do it but although it's polished them up lovely, the patchy blotches are still there...

Is there a magic product that works or is it a case of hours spent polishing it with various compounds etc?



Appreciate any suggestions, my first foray into the 'clean' side of PH

[G600]

Just gotta work through the grades, wet sand with 500 grit, 1000, 2000 then polish

[aka_kerrly]

G600 said:

Just gotta work through the grades, wet sand with 500 grit, 1000, 2000 then polish

Yep. You will need to sand that back to get an even finish & remove any deeper corrosion/pitting then gradually work through the grades, on something like a rocker cover stick to sanding in straight lines so as not to create a crisscross effect.

You may even need to start with less than 500 grit, as low as 160. Then you ought to be able to sand by hand up to 2500/3000 grit depending on how close to mirror finish you want. As its a relatively flat surface you can finish with a DA/buffer using the autosol.

here is a quick example of some BBS lips I was working on the other day, at this stage this is all sanding and a quick coat of autosol by hand.


|https://thumbsnap.com/Hx71wY1r[/url]

[Chris32345]

You may get it. ABIT better with a course cutting compound but really needs sanding right back with course sand paper then work your way up like the poster above has said