How to make a wax seal on letters and envelopes? It sounds easy to do so. Melting and stamping? Yes and No. Melting and stamping is only a part of making a wax seal. We are going to give you some tips how to work it out in an easy way. The demo illustration video shows you how to make a wax seal step by step. We used an electric hot plate for the demo. You can use the candle or glue gun at home to melt the sealing wax.