how does this 'metal sheet' stop the plastic from melting?
nice design but if i were you i'd use more durable materials, instead of a pixie stick a bic pen tube for instance... otherwise as long as it works i really see no problem in it...

oh yea, every stoner who makes homemade pipes should have a roll of eletrical tape.. it's perfectly suited, it's extremely flexible, it sticks pretty good, and the tape it's self isn't exactly pourus.. so it makes a nice seal..