Yeah i tried using a heat gun and made my own bag assembly. It works very good, but it dosent taste the best. Everything you put in tastes the same. So i got a volcano. I'll be damned if it dosent taste almost the same! I've had a lot of fun with my volcano though, especially at parties. But to me everything you put in there tastes the same. Not bad, but the same vaporised taste, that a lot of people love. As long as you get a heat gun with VARIABLE heat controls. Otherwise they usually just have 2 settings, BOTH of which are way too hot for vaping. Then start the temp low, and turn it up with each bag till no smoke, or it burns, then stop. Yes, this is almost as good as a volcano, just dosent look quite as nice on the coffee table.