^^ Yes.
Works very good with acetone.
I did it with mhrb tea resin from about 200g of bark powder from 3x acid cooks, evaporated down to a resin.
Mixed with caoh (calcium hydroxide, lime), and some water to make a paste. Let it fully dry over night, powdered, and pulled with acetone.
You can just fasa it from there, to get fumarates, base it again and pull with heptane to get white xtyals, or evap the acetone to get a full spectrum freebase oil. Dissolve that in near boiling hot heptane, and freeze-x in a shot glass.
IIRC, the first 50ml heptane pull from my oil, from 200g of bark, precipitated out ~750mg of white freebase crystals. CAme out to a total of ~ 2.5ish grams of white freebase, and ~ another gram of active tryptamine oil, probably n-oxide and some other stuff.
IT works very, very good.
Even if you just basify a resin from an evaporated tea, with caoh, or sodium carbonate and pull with hot heptane, then freeze-x.
For fumarates for pharma, just use dry acetone on a dried basified resin powder to pull, and fasa it.
Even worked good for some 4-aco-dmt hcl goo i had that got a bit too hydrated. Same tek, just ended up with a fumarate salt, thats a lot more stable, and much, much less hydroscobic.
Good yields, simple, easy, quick, and very efficient as far as how much solvents you are using.