When you have old metal furniture, it is important to know how to remove rust from it. There are many products that you can buy to get rid of rust on your furniture. These products include Oxalic acid, baking soda and WD-40. While these products may be helpful, there are also other simple and inexpensive ways to get rid of rust on your old metal furniture. Vinegar If you're looking for a way to remove rust from metal furniture, you …