Before I used the spray adhesive I called and talked to someone and he said that the spray adhesive is ONLY flammable when it is wet, once it dries it is no longer flammable. He did not know if it would work on candles, he said he uses white glue, which I'm sure would work too but the spray is so much easier and I want to make a bunch to give as gifts. I will of course do more tests, but they sell these in the stores and I don't think they use heat guns, I think they use some kind of glue. I appreciate everyone's help, this site is so awesome. I've learned so much in a few days. Donita - I saw some of your candles and they are so gorgeous. I hope I can eventually get to where you are. Thanks again for all your help.