Lemon The citric acid in lemons works wonderfully on alkaline stains, like soap scum found in bathrooms and kitchens. You can use it to clean and make old copper pans and pots and other oxidized metals sparkle; and clean and remove odors from your microwave. Lemons can also be used to san...
Attempting to remove it will only damage your prized piece.This is firestain, which is oxidized copper, and can be found on many pre-colonial through early twentieth century pieces. It is not generally seen on pieces that have been produced by the large American silver companies after the ear...
During the melting process, a thick layer of aluminum oxide forms on the surface of the molten bath. The dross layer contains crumpled films of Al2O3, MgO, or MgAl2O4 spinel. Trapped in the films are droplets of non-oxidized aluminum. Flux is applied to the dross layer and mixe...