weed oil, is just like hash oil, where the THC is extracted using Butane, if you want, you can try this with a film canaster, an eighth(finly growned up) and a can of butane, the butane travels threw the weed, which is in a canaster of some sort, and extracts THC from it, the butane lands in a pyrex bowl, and the butane evaporates(dangerous unless its outside). it will leave behind a smokeable oil, which is VERY potent. But u need like 28 G for it.
I've heard of putting nugs into everclear (close top) for around a week, then open for a while longer, any one ever heard of this?