Maybe I'm working too hard, but I put my cappings and some water in the bottom of my crock pot--an old one; not the one I use to make beef stew!--and let it cook til the wax melts. I let it cool & harden, then melt the wax down again without any water (I watch it carefully so it won't burn, even though it is a "slow cooker.") As soon as it's all melted, I pour it through one of those paint strainers into a waxed milk or o.j. carton. Then when it cools, I peel off the carton and I have a really pretty block of clean wax.