If nothing is available, consider breaking the can’s tab in half and using the sharp point to create a series of small holes.
Studies are inconclusive on whether aluminum can cause Alzheimer’s. [2] X Research source That said, the plastics used in the paint and inner lining can contain BPA, and it isn’t clear that heating and sanding will remove enough of these plastics. When smoked, it’s possible that they may increase your risk of cancer. [3] X Research source The basic principle of the soda-can pipe can also be transferred to widely available things like apples, potatoes, and other things that don’t have the harmful potential for side-effects. Smoke at your own risk.
Two 12 oz cans Tape Can opener Scissors A trumpet mouthpiece or glass slide Water
Try to make sure you round out of the edges of the hole. You can cover it with plenty of layers of tape.