25g STB trying to salvage + next run with 50g, need solid advice/tek

[AciBoy1234]

Short version:


Totally botched my first 25g STB on Mimosa hostilis → ended up with brown sludge + white clumps, basically 0 yield.Right now trying to rescue the mess: re-acidify with vinegar, re-base, pull with fresh naphtha – but looks grim.


Gonna jump straight to 50g next because I want decent amount for a few sessions.


Quick questions for the pros:

• Is STB still fine for 50g or should I switch to full A/B or A/B with defat to avoid the same shit?
• What exactly needs to change/scaled up properly at 50g? (lye amount, water volume, naphtha per pull, stir/heat times, jar size, temp control, etc.)
• Anyone got a clean, working 50g STB tek (with exact g/ml numbers) that's still good in 2025/26? (Cyb's, Noman's scaled, whatever – link or quick rundown)
• What are the most common fuck-ups at this scale that kill yield (emulsions, bad bark, over-shaking, wrong pH, etc.) and how to dodge them?

No interest in wasting another 50g – hit me with real tips, common pitfalls or tek recs!Thanks guys.

 

[fractals4life]

I'll start with saying Cyb's has always worked for me and is relevant today as it ever was.


Possible Pitfalls that might reduce yield ( any tek):

Not enough NaOH .... unlikely as most teks give a very generous excess as a baseline. (Cybs recommends 50g in approx 750ml, you can get away with only 10g from a ph point of view, the excess helps prevent emulsion formation though )

Too much naphtha: To achieve freeze precipitation you need a fairly concentrated solution of DMT in your naphtha, so don't massivley overdo it or all the DMT stays in solution, even at freezer temperatures.

Not enough agitation: If you don't allow the naphtha to come in enough contact with your based bark soup for long enough then not enough DMT will be alowed to dissolve in it to bring about precipitation when it is chilled in the freezer.

Too much agitation: On the other hand, shaking up the naphtha and soup too much can result in a milky middle layer forming which won't separate back out again without a very long wait, or heat, or vibration. To avoid this, add salt, don't shake too much, you should be aiming to see the two liquids separate out again in a few minutes.
Also make sure the two liquids are as separated as possible before agitating again, you should be able to see a smooth interface betwen the liquids without too much "foam" on top.

Not enough water: if the soup appear to be holding on to much of your naphtha and it won't separate at all well, try adding more water. A sludgy soup will retain naphtha that has DMT dissolved in it, reducing the yield.

Not chilling the naphtha enough ... the freeze precipitation method relies on the reduced solubility of DMT in naphtha as the temperature is reduced, if you don't get cold enough then you don't reduce the solubility enough for any DMT to crystallise out.

Not enough DMT in the source material: The only easy way to test this is to try and extract, ensuring none of the above pitfalls are encountered.


Hope that helps! You do not need to be gram or millilitre accurate in these processes really.