i just made one, but my friend just put the bulb on top of the bottle, without doing anything to the bottle, taped it, cut a carb in the bottom of the bottle, cut a hole for the tube, and cut another hole to drop weed in, taped over it to close it, then lit the lightbulb, but nothing happened. no smoke from the weed at all, and the bulb ended up shattering. any tips on why it didnt work?
for homemade vaps you must hold the lighter's flame about 1-2 inches from the bulb for about 30 seconds, and you will see a faint amount of vapor, you then hit the vap, repeat process.
Also it might not have been air tight between bulb and bottle.