imho. the safest way for you to make cco--> hash oil <-- is a 3min, Quick Cold Wash, in freezing cold ethanol. strain, evaporate the ethanol out and there you have hash oil. you prob get about 1g per oz of dry herb.
yep you can do this....
more details here How To Make Concentrated Cannabis Oil
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yep you can do this....
more details here How To Make Concentrated Cannabis Oil
scroll down a bit...