For anyone wanting to de-anodize aluminum you can use any oven cleaner with lye in it(such as EZ off). But DO NOT leave it over night. It will form black pitted areas on the aluminum. Instead spray it on, watch it start to dissolve the anodizing(I will start as soon as you spray it on), and then start scrubbing it with an old toothbrush or thick cloth. And then wash it off with some water and you're done!