It might be a bit trickier to choose a wooden chillum, but a general rule is that the more durable the wood, the more tough the pipe will be. Maple, walnut and rosewood are some typical hardwoods accustomed to make chillums. Bamboo is another substance often used in chillum-creating. http://mrhempy0.slypage.com/1769353/considerations-to-know-about-cbd-tincture-guide