Re: How wide can a stem be?
Keep in mind the diameter of the hole/holes in the base of whatever bowl you use. If the diameter of the pipe is too much you could end up pulling too much oxygen in. That could heat the coals up to a point where they begin to scorch your shisha. This is all hypothetical on my part, im sure someone schooled in physics would be able to give you a real picture.. just an idea to keep in mid.