I would try 15 sec. intervals till it reaches a temp that will melt the wax. Once the wax is melted(you will want it to soak in) let it stand for a day or so. remove the excess wax then polish with a rag. I would still add another coat while it is cold and polish again. I have used this method before on Pipes. it works but it will wear off so take that in to consideration. something else to consider is the type of wood, soft woods do not take well to it and will crack