An alien that my friend knows is currently extracting mesc out of his san pedro. what he wants to know is once he has mescaline acetate how long does it take to evap the vinegar in the oven set @ 155 degrees? Also how long would it take at room temp(roughly)

Another thing, once all the vinegar is evaporated wouldn't it become freebase mescaline? Doing the same extraction processes with MHRB and evapping via a double boiler has given the alien freebase dmt so why wouldn't it be the same for mesc?

Wisdom is appreciated

It depends on the quantity you want to evaporate. I evaporated my first 150 ml vinegar at 122F and this took about 4-5 hours. The last bit I evaporated at room temperature. The second extraction (also about 150 ml) I let it evaporate with only a fan. This took quite some time. Around a day or two. In both cases it ended up with a gooish substance. It won't be freebase. I'm quite a chemical noob but from what I read on the forum it's freebase when in the limonene, when it comes in contact with the vinegar it's converted to acetate. If I'm wrong about this please correct this.
Enjoy the ride!