Then when your extractor is full, youl need something to catch the gas/oil.
And something under to keep the bowl warm.
I use a pyrex dish as its glass and has a flat bottom which makes it easier to scrape the oil out, then i put that in a saucepan with some hot water from the kettle, this speeds up the evaporation of the butane, i fill the saucepan so the water line is just below the pyrex dish, so it just keeps it warm, if the hot water is touching the glass the heat can affect the potency of the oil.
Then just hold the extractor over the pyrex dish/saucepan of hot water, and squirt two cans of gas through the extractor, the liquid butane/oil after a few seconds will start to spray out the bottom of the extractor into the dish.
Be sure to completely empty the cans before removing them from the extractor, and hold the can on for 30seconds after the can is empty to hold the pressure in the extractor, then i blow through the extractor to get the last drops of gas out.
Then the gas/oil will start bubbling in the dish like its boiling, butane will evap at room temp, but the hot water speeds it up tenfold.
Then after 15mins or so the oil thats left behind can be scraped up with an old phone top up card or whatever, just dont use your cash/credit card as it sticks for ages

then i just smear a drop or two onto my rizla and skin up as usual!
And remember to extract outside and dont smoke while doing it
