Type of cacti used: San Pedro
Was just the dark green outer layer used: No. The woody core was removed, but the white stuff between the core and the green flesh was also used.
Starting amount of cacti in grams: 90 g
Final Amount of product: 1.801 g
Was it washed: No
% yield: 2%
Timeframe taken for extraction: 4-5 days
Other notes: The final products ranged in color from dark brown to light tan. They were quite impure - 250 mg with 3 datura seeds was barely noticeable (possibly inactive - can't say for sure). 800 mg on its own was quite powerful, though (maybe a little too strong). FWIW, the cactus powder used for this extraction was strong on it's own - putting 30 g in capsules and taking with panax ginger extract gave a very nice, smooth ~10 hour trip with no nausea.
Can't remember if SWIM used lime or NaOH. SWIM definitely does remember losing limonene in the cactus sludge, though. I think it was over 100 mL that got "stuck" in the cactus sludge and could not be retrieved no matter what. SWIM gave the limonene-base-cactus-water mix at least two days with lots of mixing to react, but when swim did A/B with the leftover cactus sludge there was still some mescaline in it. All in all I think it's a great tek for beginners - it's hard to mess up, yields viable products, and safe - but it doesn't seem as thorough as A/B. A bigger (read: wider diameter) french press would have helped.