BHO Tube Pressure

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chronickiller7

Well-Known Member
So my yields have been rather low using my sstb and was wondering if it could be due to tube pressure, since they seal on the tube isn't that good. My worst yield was 8% and my best 15%. On average it's about 11%. I run quarter ounces at a time, since I don't have a vac chamber. I currently blow onto a glass dish with a little 99% ISO, then put it in a dish with water on top of a griddle ( all outside of course), then transfer to an oil slick pad to sit on the griddle for a little. So, should I invest in a glass tube? Or can I fix the pressure problem in my sstb or are my low yields due to other reasons? Would freezing the bud help?
 
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aesthyrian

aesthyrian

Blaaaaah
Are you packing the SSTB as tight you can? Also, are you wrapping teflon tape around the tip of the butane can and any adapters you might be using? I find that doing these two things helps keep the pressure in the tube.
 
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chronickiller7

Well-Known Member
aesthyrian said:
Are you packing the SSTB as tight you can? Also, are you wrapping teflon tape around the tip of the butane can and any adapters you might be using? I find that doing these two things helps keep the pressure in the tube.
Click to expand...
I am packing the tube fully (and pretty tight) but not using Teflon tape. Just read about using it so I'll try it next time. Would the pressure difference affect my yield?
 
chronickiller7,
Snake Plissken

Snake Plissken

Transcendentalist
I know people who have built valves into their cylinders (obviously not glass) to let the butane sit on the material longer before release. They got better return, but not knowing the math it makes me nervous messing w/ pressure.

Be very careful w/ Teflon tape. It will shred to almost invisible 'hairs' that will taste like crap if it ends up in your product. Usually not a prob if you pay extra attention during capping/uncapping.

Freezing wouldn't hurt, but the material gets pretty frozen during the process. Quality of material is the most influential factor.

I only use larger tubes, maybe the small tubes don't allow the butane to remain in the chamber as long? If so, you could use more butane or add slower.
 
Bouldorado

Bouldorado

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chronickiller7 said:
I am packing the tube fully (and pretty tight) but not using Teflon tape. Just read about using it so I'll try it next time. Would the pressure difference affect my yield?
Click to expand...

I don't really think teflon tape would make a significant difference. What type of filter are you using?

Also if you're having trouble with the sstb, you could look in the soak method:

https://www.icmag.com/ic/showthread.php?t=168388
 
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AdmiralAlpacha

AdmiralAlpacha

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Got a picture of the medicine you are using? Meds make the biggest difference in my experience. Pressure can effect your yields but unless it is super loose you should be fine.
 
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chronickiller7

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I got a better sstb that has a smaller hole so the tane adapter fits real tight. I will blow the butane through a little slower to let it soak a little better. If I can pick up more meds today, I will be doing another batch today.
 
chronickiller7,
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chronickiller7

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Here it is. Did a run with my cut down sstb. Packed 6.8g tight, got 1.2g of wax, about 16% yield! I don't know if my wax is purged. I think it isn't. I just whipped a lot. No oil slick pad. Could I then take the wax and put it on the oil slick on the griddle? Would that help purge?

 
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jdee

jdee

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http://skunkpharmresearch.com/diy-vacuum-purging-chamber/
http://skunkpharmresearch.com/vacuum-purging-and-processing-tips/
http://skunkpharmresearch.com/spraying-butane-directly-on-silicone-mats/

I thought I was doing a pretty good job purging my oil but these guys have taught me I wasn't doing it as good as I could and that there is a better way! According to skunkpharm 115f is an ideal temp for your heating mats controlled by a light dimmer under your vacuum chamber. They specifically say a griddle is not able to reach and hold the required low temps you would want to preserve the terpenes when purging.

If you don't want to invest in a vacuum chamber a toaster oven works if you don't mind destroying terpenes in the name of purging. Griddle could work never tried though. Put your oil on parchment paper and turn your oven or griddle to lowest and let it melt into a puddle. The higher the temp, the darker it will be, the less terpenes are left in your oil. Butane makes large bubbles and terpenes make small bubbles. Initially when heat purging your oil should be quite frothy from the butane escaping, when the bubbling calms to no visible large bubbles and just tiny ones you can remove from heat as your only destroying terpenes now.

Here's how I make a small run quickly
-never whip your oil...
-preheat toaster oven with ceramic tile and pyrex dish
-fill fry pan with hot water and place outside
-grab pyrex dish,butane,glass extractor..put heated pyrex in fry pan full of hot water (double boiler)
-blast into pyrex stop soon as the liquid coming out turns clear
-seconds later most butane has evaporated, throw pyrex in oven, place tile on top to keep it warm
-remove and scrap pyrex onto awaiting square of parchment paper and place on preheated ceramic tile
-throw tile in vacuum chamber until large bubbles stop, small bubbles are terpenes..preserve these
-if not using vac place tile in toaster oven until only small bubbles then remove
 
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chronickiller7

Well-Known Member
jdee said:
http://skunkpharmresearch.com/diy-vacuum-purging-chamber/
http://skunkpharmresearch.com/vacuum-purging-and-processing-tips/
http://skunkpharmresearch.com/spraying-butane-directly-on-silicone-mats/

I thought I was doing a pretty good job purging my oil but these guys have taught me I wasn't doing it as good as I could and that there is a better way! According to skunkpharm 115f is an ideal temp for your heating mats controlled by a light dimmer under your vacuum chamber. They specifically say a griddle is not able to reach and hold the required low temps you would want to preserve the terpenes when purging.

If you don't want to invest in a vacuum chamber a toaster oven works if you don't mind destroying terpenes in the name of purging. Griddle could work never tried though. Put your oil on parchment paper and turn your oven or griddle to lowest and let it melt into a puddle. The higher the temp, the darker it will be, the less terpenes are left in your oil. Butane makes large bubbles and terpenes make small bubbles. Initially when heat purging your oil should be quite frothy from the butane escaping, when the bubbling calms to no visible large bubbles and just tiny ones you can remove from heat as your only destroying terpenes now.

Here's how I make a small run quickly
-never whip your oil...
-preheat toaster oven with ceramic tile and pyrex dish
-fill fry pan with hot water and place outside
-grab pyrex dish,butane,glass extractor..put heated pyrex in fry pan full of hot water (double boiler)
-blast into pyrex stop soon as the liquid coming out turns clear
-seconds later most butane has evaporated, throw pyrex in oven, place tile on top to keep it warm
-remove and scrap pyrex onto awaiting square of parchment paper and place on preheated ceramic tile
-throw tile in vacuum chamber until large bubbles stop, small bubbles are terpenes..preserve these
-if not using vac place tile in toaster oven until only small bubbles then remove
Click to expand...

So a breakbleeding vac set up would be enough vacuum to pull butane from 1 to 1.5 grams of oil? That's about how much I yield on my quarter runs. And don't whip at all? It makes scraping a lot easier. I've seen videos of people putting their wax onto parchment paper or oil slick pads and putting them on the griddle, so it melts and turns into shatter? Is that not actually purging? I don't want to put it in the oven or toaster. I want to keep the flavor as much as possible.
 
chronickiller7,
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chronickiller7

Well-Known Member
This looks similar to what I made. No sizzle or anything when dabbing. But I think I will try heat purging on my oil slick and griddle next time. I have a laser temp gun so I can get an accurate reading of the temp at all times. Is 120 degrees F too hot for a heat purge?
 
chronickiller7,
AdmiralAlpacha

AdmiralAlpacha

Well-Known Member
You could probably still throw it on the griddle, I did that before with some of my earlier batches. Id put a plate or something overtop of it to give it a nice surrounding heat.

jdee posted the link about the questionable practice of BLASTING onto the oilslick, but purging with one on a griddle is perfectly fine. I'd give it a try.

120-130 is ideal for purging if you aren't using a vac
 
AdmiralAlpacha,
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chronickiller7

Well-Known Member
AdmiralAlpacha said:
You could probably still throw it on the griddle, I did that before with some of my earlier batches. Id put a plate or something overtop of it to give it a nice surrounding heat.

jdee posted the link about the questionable practice of BLASTING onto the oilslick, but purging with one on a griddle is perfectly fine. I'd give it a try.

120-130 is ideal for purging if you aren't using a vac
Click to expand...
Sweet. I'll give it a try today. How long would it take?
 
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