- 1Locate some sort of an empty plastic bottle. A 20oz bottle works best, because it will be less cumbersome than a 2 liter (0.53 US gal) bottle. Anything like an empty water bottle or soda bottle will work.2Get a socket bit. You can find these at any hardware store. Ideally you want a 7/32, or 5.6mm, socket. Make sure the shape is roughly one inch long, skinnier on one end (smaller diameter), and fatter on the other (larger diameter). Also make sure that hole on the bottom of the skinny side is sort of small, so that product will not fall through while being smoked.3Gather the rest of the tools and materials. For this project, you’ll need a lighter, a pen that can be taken apart, duct tape, and, optionally, a needle or exact-o knife.
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Source: wikihow. com