Man, that is one ghetto ass bong. Good on you for making it happen, but when I see a bong like that I can't help but reach for the ROOR and giggle...
im sorry but, you could have done alot better then a copper downstem and saran wrap to seal of the hole. use some metal piping, or a pen for the downstem, and then some electrical tape or whatever to seal the hole.
dude copper fucks your shit up.. fo serious man just go to california and buy a bunch of build-a-bowl peices..