At first, I use some kind of A/B TEK to extract the ACRB I got. When I smoked the extracted clear oil(at room temp), the trips were a bit too wild and forceful, and it's quite irritating to my mouth and nasal passage. I can manage to inhale the vapor anyway but most of my friends can't.
I gave the oil a little A/B, and it seemed to precipitate harder crystal in freezer that can still be solid in the fridge, albeit soft and waxy. The irritation is much much less than the the original oil, about only 1/4 or 1/5. The breakthrough has a lighter, delightful feeling, that I found it quite recreational. I'm in love with this substance.