One tube lets you suck, and the other tube pulls air back in so your sucking removes vapor rather than just causing a vacuum to form.

I did this, and it's an amazing tool for getting blazed on the DL. Also, if you exhale a hit through your nose and it's good-smelling bud... mmmmmmmmmmmm!!!
Goodman3eb Reviewed by Goodman3eb on . light bulb vaporizer has anyone ever made one? if so how did u use it. What i did was cleaned out all the shit inside and then i put the bud in there, then i covered it will a paper towel and then i put the flame to the bottom and every once in a while i would shake the bud a little bit and then i could see like smoke and i am guessing that was THC? but then when i figured there was enough for a monster hit i took the paper towel away from the top and then put a bic pen (without the ink shit so it was just like a Rating: 5