Major brake dust on rear of raw Aluminum rims?

[ETsC10]

Originally Posted by Goostoff

muratic acid. It will tarnish the polished side but you can polish it back out or just leave then that way.

Here is one I cleaned up yesterday. Took about 15 minutes for each wheel.

Very interested in this!
How do you go about working with the acid,
safety precautions, what not to use it on,
disposal tips?

[Goostoff]

Originally Posted by ETsC10

Very interested in this!
How do you go about working with the acid,
safety precautions, what not to use it on,
disposal tips?

Just try your hardest not to breathe the fumes. Use in a well vented area, or wear a respirator. Do NOT use on concrete as it will eat the concrete as well. Laytex gloves are nice as well.

With all the safety crap out of the way. I just use a spray bottle and spray it on liberally. The more wet you spray it on the more even the etch will look when you rinse them. This way if you dont want to spend hours upon hours polishing them they will look even, and raw. If one part dries it will streak and you will need to start over. Let it sit for a couple minutes, and scrub with one of those wheel cleaning brushes. Then rinse it off. A powerwasher works best.

You can pick up muratic acid at home centers or pool supply stores. It is used to etch concrete in the construction industry, or soften water in swimming pools.