The ass end of my tek:    Recrystallization   =================     The idea behind recrystallization is that solvents generally hold more   solute when hot than cold and that the solubility of different solutes   varies differently with temperature. If a solvent with a lot of   different solutes dissolved in it cools down slowly, the different   solutes will precipitate individually. Naptha will work for this but   heptane is better. Heptane is available as Bestine -- a rubber cement   remover.     Place a glass container with the DMT and a glass container of the   recrystallization solvent together in a pan of hot water. Shot glasses   in a saucepan work well for a gram or two. The fumes from whatever   solvent you use will be extremely flammable, so don't use a gas stove   or light a bowl or be otherwise stupid. The DMT will already be   melting if the water is hot enough. Add the hot solvent little by   little (eye-dropper), agitating until all of the DMT is dissolved. Use   as little solvent as possible. It should take only about 20-30ml of   solvent per gram of powder. The solvent will be a clear yellow.     Leave the pan of water with the DMT container to cool to room   temperature. Remove the DMT container and cool in the refrigerator,   then the freezer. You will end up with DMT crystals of varying purity   atop a pellet of slag which still contains quite a bit of DMT but also   lye if you skipped the ammonia wash. Filter the solvent and separate   the crystals from the slag. The crystals can be refined in one or two   more recrystallizations into pure clear DMT if desired. The slag can   also be further refined or simply redissolved into the next batch. The   solvent can be reused or evaporated down and the residue scraped and   cleaned. And don't forget to scrub those jars and utensils with your   favorite smoking herb!