To melt my beeswax, I use an empty, clean, small tin can (not a tuna can, they are hard to handle when full of hot melted wax). I place it in a pan of water like a double boiler set on medium high and watched constantly. Before I start, I use pliers to create a pour spout, to make that part easy. After the wax melts, I use my silicone oven mitts to pick up and pour the wax into baking cups lined with papers, and sprayed with cooking spray. When the wax sets up, I tear the paper away and use my thumb to rub the square edges more rounded, or you could trim the sharp edges first. (I would rather lose a little wax this way, than to have to buy a whole new chunk)