I use a solution of apple cider vinegar and hydrogen peroxide to get most of it off but there's still a lot of scraping to be done if you let it go too long.
TWR, You are probably aware of this, but for those that are not, this is called the "Dip".
Use with caution.
Both the liquid & residual slurry byproducts of using the dip are very Toxic, and need to be handled and disposed of responsibly.
Use chemical resistant gloves & eye protection when using or handling parts that have been in the dip.
I thought I'd read that the 'Dip' would dissolve aluminum? Duration of exposure may be the key factor? I know for a fact that it will literally eat steel (not stainless steel though).
Jerry
