From Instructables user Icedvovo. Seems like the best way to spoil the fun, here, would be to point out all the reasons not to do this on one of those returnable bottles that you don’t actually own. While I’m at it, I might mention that there may be important safety labels on your propane bottle that should not be obscured. What did I miss? I’m concerned that some fun might be slipping past, unspoiled.