What method can remove copper rust and not destroy the original patina
Ash method: brine point tofu, a drop of a thing, for the copper machine surface oxidation layer, you can use soot to rub, can achieve very good results.
Eraser: as the name suggests, is to use an eraser to rub. In the latter three ways, the oxidation of copper will damage the copper surface more or less microns.
Grinding method: use toothpaste grinding, because the toothpaste contains a lot of abrasive silicon, you can wear the surface of the copper machine oxide layer off.
China's Bronze archaeological repair methods: we here thousands of years ago, Sanxingdui unearthed things can be so whole, advantages: absolutely no harm to bronze. Dry with one hundred and sixty grams of fine sawdust sixty grams two hundred and forty grams of talcum powder and wheat bran together into fifty grams of vinegar into paste on the rusty bronze patina took off after the upper hand
