As for a used or new bulb, either will work fine, and is safe. The brown substance inside the bulb is a dual purpose inulator and adehesive. No health risk from this substance as long as you dont burn it directly and inhale. :thumbsup:
bobhasbitchtits Reviewed by bobhasbitchtits on . Lightulb Vaporizer: How to... This is a tutorial on how to construct and use a lightbulb vaporizer. It's a simple and easy to make contraption that will save you time and money and keeps the smell to a minimum, perfect for college dorms (my purpose). Materials: 1. Lightbulb, any type, shape, size or brand, just make sure the lining (if it has a white lining) is powder, not the type that is painted on. Halogen bulbs also may pose a health risk. 2. 20 oz. plastic water bottle. 3. Straight pen body tube. 4. Pocket Rating: 5