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Thread: BHO with DIY vaccuum purge?

  1. #1

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    Lightbulb BHO with DIY vaccuum purge?

    I'm slowly getting ready to make some BHO and have two jar related questions.

    The first is can I blast directly into a jar like this or would the cold butane cause too much thermal stress, or am I overthinking things?



    Secondly I'd like to pull a vaccuum in the same jar using the water hose vaccuum method.
    I have no idea how strong of a vaccuum that can even create, perhaps anyone here has done this before and knows if the glass would hold up?

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  3. #2

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    Your problem blasting into the jar would be that BHO is like bloody glue

    BB was playing with DIY purging, drop him a line
    It's Not What You Know, It's What You Can Prove

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  5. #3

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    I'm not too worried about that M_C, I'll scrape out what I can to transfer to a silicone storage container and whatever remains will be dissolved by adding oil to the jar.

    Just found the name of the thing that makes the vaccuum, it's called a venturi injector.

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  7. #4

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    I’d blast into a square Pyrex dish then scrape the oil out and put onto a silicon matt or parchment paper before placing it in vac chamber


    Sent from my iPhone using Tapatalk

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  9. #5

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    So I finally got this done yesterday, blasted right into the jar and that went fine.

    Have to say I have my doubts about this BHO thing because after 2 cans of butane the last drops that came out of my 250ml tube I let evaporate on my hand and they still left behind a lot of stickiness which I guess indicates there were still cannabinoids left in the tube.

    On top of that I ended up with some water inside my BHO as well, from condensation on the inside of my jar due to the cold and relatively high atmospheric humidity.
    I did manage to get the moisture out, or at least I think I did. I put the jar a bit sideways in a Vacuvin storage container, drew a vacuum with the little penis pump that comes with it and after a few hours the water had collected in the lower end of the jar. No clue as to how much water is left in the BHO itself.
    The vacuum of this little system is strong enough to make the BHO rise a bit so at least it does something and is a step up from not purging at all.

    Rosin is looking a lot more interesting right now I have to say, no need for expensive solvents and you can even do it without the fancy micro mesh nylon bags. And best of all the spent weed is still perfectly safe for edibles or oil infusions or whatever you want to do with it.

    My apologies for not having any pictures, I'll see if I can get one up from the BHO when I'm completely done with purging. I may leave it in the vacuum for a couple days.

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  11. #6

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    Very cool and interesting Cleargreen I must look up this water vac I made a vac using a pressure pump plant sprayer from the pound shop and reversing the valve making it suck rather than blow and it gave a seriously good vacuum.

    I also blasted into a Pyrex dish lined in a silicon matt so collection was simple.

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    Last edited by GreenIRL; 12-01-20 at 12:57 AM.

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