I love the technique for stamping on candles and have been wanting to try it for a long time. Thing is, I really don't like candles. But last week, I found some fake battery operated candles with timers at Costco. The best thing is that they are real wax on the outside even though they are battery operated. So bought a couple of sets and have been playing. I even found the instructions on line for making a gift box.
To stamp on candles it's very easy - you are actually stamping on regular tissue paper first. Cut your design out and lay it on the candle face up. Take a piece of wax paper that extends around the candle and hold the wax paper tight against the candle. Heat up your heat gun for a few seconds and then use it against the image. You'll see when it starts to melt into the candle. Try not to hold the gun in one place for too long. When you are complete, let the candle cool for a few seconds and then slowly peel off the wax paper. Amazing!!