Copper plates, decorations, and jewelry can be a beautiful addition to any home. However, copper can become dull with time and requires regular polishing. You can polish copper fairly easily with household supplies like lemon and flour.
4 Ways to Polish Copper - wikiHow
3 Easy Ways to Polish Metal - wikiHow
4 Ways to Clean Copper - wikiHow
4 Ways to Polish Copper - wikiHow
How To Clean Copper
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How to Clean Copper Coins without Damaging Them: 4 Ways