just make sure it is together as tight as can be,and tape it around the outside.it will look fucking retarded,but if will work.and since the tape is on the outside,it wont brun or create any nasty fumes.i had to do the same thing with a brand new 60$ glass bowl i just bought.i was smoking,and noticed a crack,and lightly touched it,and cracked right in half.jus like wut happened to ur stem