This is a fairly straightforward tek that results in freebased alkaloids ready to be smoked. In this step one requires calcium hydroxide or sodium carbonate as well as acetone.
A) Mix well equal parts of the fumarate salts and calcium hydroxide or sodium carbonate.
B) Add enough water to make it into a paste, but it is still fine if it gets more watery. Both calcium hydroxide and sodium carbonate are bases. Under these wet conditions they react with the fumarate salts and release the alkaloids in their freebase form.
C) Let the paste dry out completely. It should be totally dry before continuing to the next step.
D) Cut the paste into a powder and mix it with acetone. Let the powder precipitate. Acetone will pick up the freebased alkaloids leaving back calcium hydroxide (or sodium carbonate) plus any unwanted fumarate salts (calcium fumarate or sodium fumarate) that have formed during the process of freebasing.
E) Aspirate the acetone and let it dry. Now one has freebased alkaloids.
F) Step D can be repeated 4-5 times just to make sure all the freebase had been picked up.
G) The freebase that results is a mixture of all the different alkaloids that can be pulled using xylene/toluene. This may take some time to get solid, especially if plenty of DMT-N-Oxide is present. DMT-N-Oxide is a yellow oil and albeit perfectly smokable and pretty active it can hinder the solidification of the end product. But given time, it does get solid. And it provides a very intense experience. Alternatively
H) (Optional)
..one may wish to get pure white DMT out of this mixture. In that case the freebased alkaloids can be washed with naphtha. Naphtha will pick all DMT leaving back DMT-N-Oxide and Jungle Spice (if MHRB had been used).