Melting the Wax: Paraffin wax is the cheapest of waxes and is great to use, but it can crack giving a mottled effect if you want to avoid this then use beeswax. You can also use paraffin with beeswax together.
You can melt the wax in a double boiler method (pan on pan) the same as you would melt chocolate. Or melt it in a heavy based saucepan. Heat the wax to around 170’F (80’C) making sure that your wax does not get to flash point.
Never leave hot wax unattended and if fire occurs do not use water but a blanket or sand to extinguish fire. Once it has completely melted lower the heat right down.