Aluminum oxide

[Theo]

The left Aleron spar has some oxidation on it. What do you guys use to get that off?
thanks

[Jeff J]

Scotch brite is usually my first choice in conjunction with a good cleaning and protective measures. Airworthiness of the part will likely become a factor pretty quick if doing much more than scuffing the surface.

[Theo]

Jeff
Thank you. Do you just use the scotch brite dry?

[Rick-CAS]

Have you looked under the steel parts riveted to the spar? I’ve rebuilt several that looked good until I removed the steel hinges. The spar was almost corroded through.

[andya]

I believe Brian has some pictures of what he found in my aileron spar
in the posts for Andy's restoration

[Clayton Harper]

I use these: 3M-18733 Roloc Bristle Disc Grade - 120 grit (white). They also come in 80 and 50 grit.

[Jeff J]

Jeff
Thank you. Do you just use the scotch brite dry?

Yes. If just removing small amounts of surface corrosion I do it by hand. If doing a lot I switch to the roloc scotch brite discs or wheels. I wipe with a rag dampened with acetone to check my progress. I have used the scotch brite wheels for a dremel when working a bad spot in a tight area but those are expensive and do not last very long.

[Steve Pierce]

Theo, Have you read this thread? Some good information on this subject within this thread. I think you will find a lot of it extremely helpful with your current project.
http://www.shortwingpipers.org/forum...oration-thread

[Steve Pierce]

Some pictures here as well. http://www.shortwingpipers.org/forum...rons-and-Flaps