This would depend largely on the equipment and materials available, as well as the temperament and experience of the extractor.
All it really takes is understanding of the process involved. DMT salts are in bark, get them out [optional], freebase, isolate. Its why your highschool science teacher wanted you to stay awake, so you could properly make drugz
If I, personally, just wanted a potent full spectrum alkaloid bark extract without particular care about its appearance I would do something like the following:
Boil the available bark in a fair amount of water with up to 1/4 cup vinegar per litre for 4-6 hours. Second 4-6 hour boil with a tablespoon of vinegar per litre, let stand covered overnight. Third and fourth boil with a tablespoon of vinegar per litre, letting the fourth stand covered overnight. Combine filtered liquids and reduce to 1/4 the volume or less. Add lye with ample stirring until it turns black and produces a strong ammonia smell. Extract 3-4x with toluene or xylene. Extract the combined solvent with a relative minimum of dilute vinegar [to pH <5]. Cook some water off the vinegar. Base the vinegar with sodium carbonate to pH >11 [catuion: foam]. Extract a few times with toluene. Evaporate the toluene to yield psychedelic goo. Any goo that couldnt be scraped up could be dissolved in warm rubbing alcohol and soaked up with herb for smoking. Because of the second organic extraction the volume of toluene evaporated wont be huge. Because the second basing used sodium carbonate there will be no lye in even a sloppy product.
There are many, many teks here. Read at least six of them, understand them, choose one or make your own.
Great avatar :lol: