decarboxylate the pot first. dont break it up wrap it in 3-4 layers alum foil then bake at 200 deg for 10-15 mins watch your pot so it does not burn...check every 5 mins... once done the buds will crumble apart add the ISO to about the pot level in a glass jar ( some plastic will be destroyed by the ISO use glass) shake the mix for 2-3 mins let sit for 1-6 hours filter liquid then dry liquid... do 2 washes on the pot too... 1st one run thru in less then 10 mins or so next was go for about 2-6 hours (it will be less pure but still have some THC)
I have been doing this for about 2 months now... I love it.. lasts SOOOOOOO much longer!!