The wax is heated and poured over water and vinegar. After it cools the impurities are cut away from the cake of beeswax. This process may be repeated several times. The wax may also be poured through a thick filter such as sweatshirt fabric or through an ultra-fine fabric such as organza silk to remove the impurities. Beeswax is used for many things, and not all uses require the same degree of purity.
Candles require a highly refined product if they are to be acceptable.
Now that I am into beekeeping as well, I am getting into beeswax seriously. I consider myself a beginner at candlemaking at the present, so I expect to update this report as I learn. The first rule is don't burn your house down. Heat beeswax over boiling water. Do not heat it directly over your stove eye without having boiling water under it.