Adapting FASA/fumarate method for smaller quantities?

[TimePantry]

Im not sure of the proportions but it could be done by eye, or you could simply evaporate the FASW and wash away the excess fumararic acid with anhydrous acetone.

 

[The Day Tripper]

Im not sure of the proportions but it could be done by eye, or you could simply evaporate the FASW and wash away the excess fumararic acid with anhydrous acetone.

OR if you want freebase, take your impure fumarate salts, and mix it 1:1 by weight with lime (Caoh). Add water and make a paste. Spread that paste out on a pyrex dish and dry fully.

Scrape it into a smaller dish, pull 3x with acetone and evaporate.

Viola, easy, simple, hydrocarbon solvent free, and efficient route to freebase from fumarate.

EDIT-

To clarify, this is just an easy way to go from impure fumarate salts with excess fumaric acid from fasw to freebase dmt. IE easy removal of excess FA/impurities from fasw products.