afoaf confirmed trunk bark is great. at a fraction of the cost, and probably less harm to the tree its pretty cool stuff. in a dream afoaf told me he yielded about 3.5 to 4 grams of extremely potent yellow fluffy crystals from 1.5 pounds of trunk bark.
was only his second extraction ever, the first time he tried 100 g's rootbark and only got goo but i expect it was due to his inexperience and the small amount used causing low saturation.
anyways 1.5 pounds was freeze lysed, then cut up as small as possible which was a chore. then it was boiled in apple cider vinegar and water. then it was softer so he blended it down a little finer. saved the filtered acidic water. then he soaked for a day, boiling occasionally in 70% isopropyl with a splash of vinegar. decanted and saved. did the same a couple more times. he had two vinegar water washes. and two iso washes. he evapped most of it down to about 750 ml, he believes most of the alcohol was gone. he only really filtered it with a metal tea strainer. the saturated solution was put in a heated water bath and pulled with naphtha(used a glass tincture dropper to separate) and let sit and cool a bit allowing any tiny droplets of basic juice i may have pulled up stick to the bottom of the container as well as some oils. the cleaner solvent was poured into another container and cooled to room temp and then put in freezer. the unclean goo was also saved and washed with sodium carbonate then pulled with heptane to yield extremely pure shards when slowly evapped. the majority of the yield was fine fluffy yellow freezer prec. powder. roughly 3 .5 grams so thats around a .5% yield from cheap trunk bark. i assume that he can get more out of the bark with more soaks and boost the yield further as all the soaks came out pretty dark so there has to be more.
an alien entity from sirius told me in a dream he bioassayed some, about 25 mg or so and was stunned by both the smoothness and the potency.
he had tried many forms from orange, to yellow to white crystals, even jimjam but has found that this was among the easiest on his asthmatic lungs, he had previously tried someone elses yellow powder and had an asthma attack while blasting off kinda hectic.
his advice...trunk bark is gooooood, and save all the oils and stuff that falls out from heated pulls it is mostly n dmt and pretty much all active goodies of some sort. simply pulling the goop with bestine resulted in some of the clearest shards afoaf has ever seen