NO!! if your thinking of making a hash oil pipe out of PVC u r on crack.. i've done my own studies that have shown significant deterioration of PVC from butane... even at as little as a second use, the inside of the pipe begins to break down... u dont want to smoke that... people complain about lumps in their mouths, throat, and on their tongues... after much research, it was because of the pvc breakdown... theres another method of butane hash oil.. and its the most efficient way i have ever found. i might have even found it on RIU, a year or so ago, but i've seen a few posts about hash and hash oil recently and people are still talking about PVC... don't use it... unless u want dime sized lumps in ur throat... ouch.. oil is definately the way to go, a lot of people like bubble hash, and a lot of people have absolutely no problem with poor mans hash, but oil is the most potent form of thc... hash oil will not only stomp your colon, but the colons of distant relatives of the human species such as lagomorphs, and hypothetical colons of children you haven't even had yet... it is more potent than the strongest weed known to man... go get urself a 1/2" or 1" thick tube of copper about a foot or two long.. weld a cap on one end... drill a hole in the center of that cap (about as large as a butane nozzle tip) then drill 5 "pepper-shaker" like holes in the other cap, fill it and PACK with plant matter grinded down into POWDER, then put a paper towel or coffee filter over the other end, and slip on that 5-hole cap, now go OUTSIDE, be careful not to stand on carpet, due to electric shock NO LIGHTERS, CIGGARETTES, or ANYYYYYY form of heat or anything that could cause a spark... one spark.. and that thing in ur hand is an active pipe bomb that will explode and possibly blow your fucking head off!! BE CAREFUL, and wear a winter glove or put a towel around the tube cuz it will get awfully cold.. now that you are away from anything that could cause a spark, you are ready to fill, try to use the biggest pyrex container that you have, (the larger the flat surface, the better, like a casserole dish, rectangle much better than circle by far, but it needs to have sides cuz it will FILL with butane) and slowly start adding the butane.. use about 12 ounces of butane for every ounce of grinded up trimmings leaves, etc...squeeze for about 4 seconds on n wait another 4 or 5, then 4 seconds on, 4 seconds off, keep at this pattern so that the pipe doesnt become filled with too much pressure and blow the cap off the bottom, all your plant matter will blow out and u can say goodbye hash oil.. as u fill it, the butane will freeze the pipe, and make it's way down thru the powder, literally grabbing the thc and binding it with the butane, liquid butane will eventually start pouring into your glass container.. as it does this u will notice it should be a yellowish color, the more yellow it is when still in liquid form, the more oil that will remain once the butane has evaporated. once u have made your way through all your butane, the casserole dish will be full of liquid butane with thc basically attached to it.. the butane will ALL eventually evaporate.. give it about 10-15 min.. sources of low heat are a great way to evaporate it much faster, NOT A FIRE THO!!! i hope no one is that dumb lol, more like your hands under it and blow on the top of it.. but only if u r extremely impatient... i would just let it sit for roughly 20 min.. just incase.. once it is ready to smoke, there will be absolutely NO liquid left in the bottom, only a thick honey like residue stuck to the bottom of the dish, and around the outsides... if there is even a drop of any actual liquid in it still, wait longer, it will eventually bubble n boil away... u do not want to smoke butane.. obviously... take a razor, or something similar, and scrape the sides n bottom of that dish... yum honey hash oil... nothings better... tastes delicious, and knocks u on your ASSSSSSSS... just play it safe and remember all precautions mentioned... now go out and put ur own oil pipe together and let the good times roll!! me and a bucnh of my friends, if we arent using plants that we had recently harvested, we save up every stem from ounces that we pick up, or even outta the good old twenty bag... it seems a little ridiculous, but after a week or two theres a oil session that we have where we all get absolutely bombed off the shit... sprinkle some high quality kief in the oil, and bang, EARWAX!!!! makes it easier to pack into bongs n bowls... take that bong rip.... yea... now sit down.. you'll b there for a while.. HAPPY SMOKING!!!