New answers tagged steel
you can try to use caustic soda. It will melt down the aluminum. But you have to be very careful. Watch this video
Sometimes your just lucky. Soaking makes sense.maybe its the concentration of amonium,2-3 percent in regular store.they make 30-50 percent concentrated also,use outside only is you find it.There are sources online for liquid fertilizer 82-0-0,but has some sulfur;hope to try.
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