One 10-oz can of butane per 1-oz of marijuana
One glass, or even better, stainless steel extraction tube
One large Pyrex pot
One medium Pyrex pot
One electric cooker which you can take outside
One razor blade or a scraper for cannabis extracts
One container to hold the extracts
A purging system (if you want it and can afford it)
The process of making BHO usually goes like this:
Keep the weed in a fridge for up to a day. This will help with the extraction process as terpenes are easier to extract at lower temperatures.
Place the electric cooker and your pots outside. Evaporation should be done outside, as butane is heavier than air, and will drop to the floor. One spark, one shorted fuse, or anything of that sort is enough to create havoc and blow the roof of your place.
Cover the glass tube with a towel while holding it. The pressure within can make it explode in your hand, and harm you while you are blasting the tube with butane.
Fill the bigger pot with water, and put the smaller one in it. The hot water in the outside pot is what will force the butane in the smaller pot to evaporate.
Drain the tube over the medium pot. Once you start blasting the tube, liquid butane will start dripping out of the tube in a few seconds.
Scrape the dish with a razor. This way you wonât miss any of it, and you can spread it on a piece of baking paper and prepare it for purging.
Purge for as long as you need. Nothing wrong ever came from purging too long, except maybe that it was annoying, loud and power-consuming. If you donât purge out all the butane you can end up poisoning the users.
Put the end product in a fridge for up to 2 days. This is called winterization, a process which makes the dabs feel smoother, and removes plant waxes and lipids extracted by the butane which coats your lung, and irritates them. đđ From The White House