Gentlemen,
I didnt have time to read the whole thread but 2 things to be very cargful of
#1) never ever ever us metel pipe with metal screw on caps on it screwed on cuz if u ever have a flame get near while extracting and that thing explodes you will DIE
#2) fact remains copper pipe cant be good. I wouldnt even trust stainless steel however i think that would not create any residue
only prob with that is you cant use metal end caps less you wanna risk death for a little hash oil
spend the $40 bucks and get the bee extractor you cheap ass broke ass mothafuckas
if you can afford to make hash oil you can afford the extractor
i have a problem with you guys telling others to do stupid shit, if you wanna fuck yourselves I care not but dont go around telling others this is safe cuz its not.