Do yourself a favour and get a honey bee extractor.(see pic)
Dont use pvc or any other plumbers pipe or fittings.
The butane strips layers of the pvc plastic from the inside of the tube and this is left behind in the oil you smoke after gas evap, potentially very harmfull to your health.
The honey bee extractor is made of a plastic thats resistant to the butane so nothing is left in your oil from the extraction tube.
Dont use any old butane you can get your hands on, especially not camping or any kind of stove/heating/cooking butane.
These butanes have lots of impurities and have added smell to make any leaks easily detected, these impurities and odours will be left behind in the oil and be potentially harmfull to your health.
Use butane for re-filling lighters, and you want to be looking for ones that are suitable for gas soldering irons and gas hair straighteners also, these butanes are nearly always ultra filtered and refined and carry a stamp saying something like "near zero impurities" (see pic)meaning its pure butane so 100% will evaporate from the oil and leave you with nothing but goodness.
BHO(butane honey oil) is amasing stuff, but you gotta do it properly for your own sake.
Iv been making it for a few years now and ive done it with all sorts of homemade extractors and cheap-expensive gas and the honey bee extractor and NEWPORT gas is the best combination
I normally just smear a couple of drops onto my skin before rolling up, then just skin up as normal and the stuff fucks me for hours, but you can cook with it, its great for ppl who wanna cook with weed but dont want plant matter in their food, you can swallow a drop or two straight, or you can smoke it like a hot knife too, or inject it if you wanna?? jokin man, dont do that.