i have a thread on how to make qwiso/rso oil with videos which is probably better than explaining it..
put everything in the freezer,weed,iso,jars for a day but after 6-7 hours take weed out and break it up and put back in freezer (careful as trichomes will fall off easily when cold) for remaining time.
when ready pour iso into jar of weed about an inch or so higher than the weed and shake vigorously for 3-5 mins.. open jar and pour through a strainer into a bowl, you can pour a little more iso into jar to clean out and pour through strainer. let sit for a few hours to let sediment settle than have a clean jar ready with cheese cloth folded like 6 times over the top, use an elastic to attach to jar and do your best to scoop out and pour through cloth into jar trying not to scoop out sediment, than when done let that jar sit for more sediment to settle, sometimes i leave it for the next day. than with another jar i put together 3 coffee filters to filter through, just slowly pour the mix from one jar to the next slowly to not unsettle the sediment, you may have to change filters as you go..
than usually this should be enough filtering but if you have to do more than repeat with coffee filters..
when ready to cook, i have a sunroom and open a few windows.
have a rice cooker and pour mix into it and turn on, have a fan blowing directly at the rice cooker to the outside as the danger is isopropyl fumes are heavier than oxygen and can go under rice cooker and than kaboom!.. no smoking or fire when cooking!
i’ve been doing it like this for 35 yrs, nothing better!
you will definitely improve your method every time you do it.
also all the garbage cheese cloth, filters, weed.. can be put under hot running water until the smell is gone before throwing out., also when cooking it will smell a bit so i usually do very late at night or when there’s a storm.. etc..
thats the basics, obviously few other details here and there..
i’ll probably be making some more hash and oil and this weekend.