Hi everyone,
Sorry for not responding sooner but I'm real bizzy these daze and hardly ever have time to post. Don't have much time rite now either but I'll try to answer as many questions as I can.
As far as getting your acetate salt goo to solidify, good luck. I don't think it's possible. Swim has gotten freebase goo to solidify, but only after enhancing herb, he noticed somewhat solidified "peanut butter" on the side of the dish, which he scraped up, so he now has a little jar of pure fb alkaloids that look similar to what one gets after evapping a toluene pull.
So it should be theoretically possible to get a semisolid freebase, however keep in mind there's jungle spice in there so you'll probly never get xtls. But who wants xtls anyway? Sure they look pretty, but enhanced leaf is much easier to work with and much less conspicuous.
So, that having been said... what's the best way to get enhanced leaf?
Swim does not advocate evapping limo as the final step to getting fb. This is because limo does not evap cleanly. 69ron sez he likes the taste of a little limo on his spice, and if so then power to you... however limonene, while nontoxic, is considered a lung irritant, and I don't really see any point in smoking it. Certainly not when iso evaps 100% clean, and quicker than limo.
So, here's my ideal way to do it:
Use limo for your initial separation of alkaloids from plan material, whether you do this with a dry STB tek or a more "traditional" wet tek is up to you. Point is, you get your limo with your alkaloids in it and separate it from the plant material, etc. Then salt out using vinegar or some other acid. As mentioned earlier citric will work but you'll have excess left over. Another possibility Swim's been meaning to try is using phosphoric acid... excess phosphoric can be precipitated using calcium carbonate. The lack of a fizzing reaction indicates all the phosphoric has been precipitated. One can then filter out the calcium phosphate and excess calcium carbonate, leaving behind an aqueous solution of pure alkaloid phosphate salts. This can then be evaporated quite easily. If you don't have a food dehydrator, Swim has a friend who does it in her oven on low... Swim personally uses a hair dryer. It's not hard to figure out ways to evap water.
Anyway once you have your gooey salts, I really think your best bet is to redissolve in a little bit of hot distilled water (use roughly one ounce of water per pound of bark). Then in an eyedropper bottle add saturated sodium carbonate solution, followed by iso. The iso floats to the top... then use the eyedropper to suck off the iso, evap it, and repeat. This removes most of the sodium carbonate. Once the iso is evapped, redissolve the goo in anhydrous iso, which will not dissolve the sodium carbonate. Filter or pour off carefully to remove the sodium carbonate and evap your iso onto some leaf.
If you want the weight of your final product, simply weigh the leaf before and after. Subtract the original weight from the final weight and you have your yield.
Of course one could simply add the sodium carbonate directly to the gooey salts. Swim tried this last time and it does work... however it's a pain in the ass trying to dissolve the alkaloids when they're trapped amongst that much sodium carbonate. Swim prefers using the isopropanol layer separation so that once the iso is evapped, there's barely any sodium carbonate getting in the way of redissolving the goo. Last time swim did this he only had 70mg of sodium carbonate left after redissolution... that's such a small amount compared to the 9g of dimitri he had, that he probably could've simply evapped everything on some leaf without even bothering to remove the sodium carbonate (but he's a stickler for purity so he does it anyway).
BTW... anyone notice an incredible difference in the quality of the spice produced by this method? Everyone who's tried swim's limo spice agrees there's a night and day difference between it and the petroleum stuff.
Hope that helps... I'm about to hit the road again but I'll try to check back soon and see if there's more questions.
Much love,
SyZ