Someone was researching DMT extraction tek's and was unhappy with how all of them seemed to call for the use of dangerous solvents, and that the only ones that could be done with safe reagents could only produce the salt form of DMT (or a sticky, impure freebase). So, this person had an idea:

What if someone did a STB extraction of DMT (say, from MHRB) using d-limonene as a solvent. Then, instead of trying to evap the limo or extract it with acid, the person put it in the freezer. Would the DMT freebase then precipitate, as it does from naptha? The freezing point of d-limonene is about -72 C, so it seems like it should be possible... Or is DMT too soluble in d-limonene?

I don't think you can precipitate with limonene. DMT is well soluble in it. Then again I haven't heard of anyone trying it...

Someone supposes it wouldn't hurt to try - if nothing precipitates, then go ahead with a FASW/vinegar/(insert acid of choice) extraction to get the salt, then re-dissolve, freebase, and extract the DMT again with a different solvent.

Yeah its even more so soluble in limonene than it is in Xylene. The whole deal with naphtha is that DMT is barely soluble in it and that drop in temperature brings it all crashing out.

Even though there's no harm in trying, I'm pretty sure you're wasting your time here.