A cheaper way to go to melt the wax is use a dedicated crockpot found in a goodwill, salvation army or what have you thrift store. Mine is a very small one used to heat dip like queso. cost $3.00. In the fall, one can find blocks of wax in the grocery store as it is used for canning produce. It takes a couple of hours to get up to heat and I leave the chain in there for a while to insure complete wax penetration.I redo mine as Jur says, when it gets a little noisy. You can stretch it out a little by applying white lightning lube which is also wax based. If you throw new chains in there the bit of grease they come with helps keep the wax stick to the chain and the the wax pretty much displaces the factory grease.