I'll save you the time, trials, and realization, if you want to take a few seconds to listen. Butane is not a clean solvent to use to extract your medicine. You will be much better off learning solventless extraction, and starting with good material. Bubble Hash, in my opinion, is far cleaner and superior to oils. There isn't too much of a difference in 55% and 80% thc....either way, it's sufficient to say the least. Just my .02 though. There are many videos on youtube, just type in BHO extraction. I would recommend buying a glass extraction tube, they are around $40 on ebay.