I have a friend who has extracted a couple of times, and both times gave me a couple of 100 mgs, which he's very kind to do.
This last time the crystals came out a little sticky. Is it ok to smoke?
Made form ACRB using the 21q21q tek, pulling with heptane (Very white crystals).
He said that the AC had absorbed a lot of the 100 ml of heptane, so there was very little in the tray, and it evaporated in the freezer rather quickly.
Since he's new at this, and is just figuring out what he's doing, I'm being cautious.