Not pulling all the goods with CLS.....

Hash and Stuff Extraction
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Disclaimer…I do this at home for meds, I am not a professional, and am generally a degenerate of sorts.

I ran a half pound of head stash sour diesel flower. I used acetone and dry ice…plenty of ice. I let my solvent tank soak for about an hour in the slurry, and it was already at -10 when it went in. 6 lbs of n butane in the tank. I pressurized the headspace of my solvent tank to 50 psi and left the nitro valve open to maintain pressure, opened the liquid valve. I let the cold tane soak and fill the column, for about 3 min. Then began dumping and throttling the dump valve throughout the solvent transfer. So that’s a 12:1 solvent ratio. Completed dump. Vented n2 from collection pot. Vented n2 from solvent tank, never to 0 pressure. I then recovered passively through a mol sieve.

My maternal, flower grown by me, was hand cut to about 3/8" or less in size. It’s not been tested for potency, it’s pretty decent stuff.

I recovered about 30 grams of quality oil. Purged out to be a terpy mess, which I’ll enjoy. I expected to recover more oil than I did. I thought, less waxes, fats etc, less weight…obvious reason of lower weight. However my curiosity got the best of me, and I looked at 60x and sure as shit there are visible, full heads, that are slightly resinous to the touch(knarled machinist finger nubs), and noticable by smell of pungent terpenes of just broken heads.

I’m obviously leaving cannabinoids behind. What am doing wrong?

3x18 column, spray ball hemi cap. Packed the column pretty evenly, packing as I load with a packing tool. Filters are 20 micron and 3 micron paper.

I’m doing something wrong, and I’m thinking it is material related. I cut fat nugs, by hand, with scissors, into about 3/8" size. Should they be smaller? Should they be bone dry? This was cured for smoke, so ran with material that lived in a 55% humidity environment.

Tane should be good. Only a few runs on it, and I recover passively through a mol sieve.

I hate posting pics of my shit on here…its not super professional, and I dont put my shit out to be seen, but this is how I currently have to roll. A rack will be welded soon. I just need to figure out the hardware required to separate my components…and magically create free time.

I will repack and run again, warmer, and see what pulls…when I get around to it. I am getting an spd together, so I don’t mind collecting bho crude to learn with, but it bothers me that this is happening. I feel I should be more efficient at something I put this much effort into.

Ideas? I’m a basic BHO bitch over here…

20190527_222707
20190527_2227072510×3998 2.21 MB
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20190527_2217344032×2158 1.82 MB

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40-80g a pound is about average you hit 30g with Half a pound of material. I would be happy with that return.

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So you leave cannabinoids behind as well?
There are literally fat heads still visible, that when broken stink, and are sticky.

I’m not concerned with yield, assuming I got most of it. In this case, I didn’t.

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you’re experiencing channelling/poor distribution. use more solvent.

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12:1 ratio not enough? I thought that was on the high end of solvent ratios.

I don’t disagree on the channeling and lack of distribution. Would a finner grind/cut of the biomass help?

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12:1 is more than enough.

Your having issues somewhere, how long does it take to to inject? Stalling several times and injecting slowly slow slow will help

Btw you didn’t get moisture on trichs by not freezing fast enough did you? Do you freeze in dry ice prior to loading?

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That could be it…moisture. I freeze in the column for about 24 hrs prior. I didnt vac it down first, and it was just in a deep freezer.

So moisture could be freezing and covering the heads, making them unavailable to the butane.

Injection time for 6 a lbs…its fast enough that my guess will have a greater error the actual time. Couple minutes. I stall it momentarily to allow for good material coverage or so I thought.

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Takes about 25-30 min to inject slow 6lbs. That’ll help too

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Dang…I’m potentally going way too fast

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Dryer and finer size biomass will help, you really need to weigh the material going in to the column and after extraction. by comparing the weights you will have a rough estimate of your efficiency. when i run quality nugs i literally grind them through a stainless steel screen by hand, then when it comes time to make up the material column i barley tamp the column when packing. by tracking the rough extraction efficiency you can dial in what variables that are effecting your yield. lastly a potency test is a good standard to compare your self to in terms of extraction efficiency.In the machine shop you wouldn’t ever now a part you made part was out of specifications without a measurement device right?

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Yeah @Soxhlet right…

Freeze w dry ice (it’s fast)break it up fast, don’t over pack .

But slow down that injection for sure that’ll help

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I’m a moonshiner…we dont get the luxury of testing.

So that also makes sense. My material should by dryer and finer…nugs…head stash nugs…not some yokles outdoor crop.

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i am also thinking that mol sieve should be vertical instead of horizontal, the gas will more evenly diffuse through the beads.

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Doesn’t have to be dry. You have a sieve(and point it up). You just have to freeze fast enough! And load a squirt cold solvent over it! And running at proper temps makes big difference

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Thank you. The rack shall be made…vertical mol sieve

As far as specs…in these situations I’m more of a “fit form function” kinda guy lol

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What you gonna rack mount, the column and sieve only?

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Same here, i love utilitarian form. The beauty of a device is its function.

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Rack is a fancy word for stand. I don’t care for big tippy vessels full of explosives. Its just a safety thing my man…nothing fancy.

But I’ve thought about separating the column from the base for a more compact form. I literally live in a cabin and haven’t built my shop yet. Size is important to me, I wouldn’t expect others to rack a little guy like this.

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my first rack was angle iron mig welded together and spray painted stainless steel silver !

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So you’ll just basically hook it down somewhere so you can unhook and move to recover easily?