Vacuum Chamber vs Vacuum Oven for Purging BHO

Discussion in 'Harvesting and Processing Marijuana' started by SivineDativa, Oct 7, 2014.

  1. Hi all, I'm wondering if a vacuum chamber will do what a vacuum oven can do as far as purging BHO to lab-quality standards? 

    Lab ovens, aka vacuum ovens, are pretty expensive and a vacuum chamber is less than $200 retail and less if you did it yourself. 

    Anyone have experience in the matter?
     
  2. if your tech is on point, you can do what a vac oven can with a regular stock pot style chamber.
     
    all it really comes down to is how much you make, are you making personal slabs or doing large amounts of production work?
     
  3. At most I would process 3 pounds of material, more realistically around a pound at a time. I hear that smaller BHO purge batches have less of a fluffing effect than larger batches?
     
  4. #4 Jimmy Carter, Oct 10, 2014
    Last edited by a moderator: Oct 10, 2014
    I assume by fluffing you mean the muffin you get on your first pull? typically yes. I would just recommend getting a 5gal chamber with a good pump like a yellow jacket superevac.
     
  5. #5 SivineDativa, Oct 10, 2014
    Last edited by a moderator: Oct 10, 2014
    Thanks, I got these items I plan to use for BHO, are they a good choice? 

    Vacuum chamber - http://www.ebay.com/itm/5-Gallon-Vacuum-Chamber-and-3-CFM-Single-Stage-Pump-for-Degassing-Silicone-/281387742777

    Heating Mat - http://www.omega.com/pptst/SRFR_SRFG.html



    This is the extractor I planned to use, is this sufficient? I'm not an expert on whether you need a $10k extractor or a $500 pressure cooker modified to extract.

    BHOGart 1P - http://bhogart.com/product/1-lb/
     
     
  6. #6 Jimmy Carter, Oct 10, 2014
    Last edited by a moderator: Oct 10, 2014
    what modified pressure cooker are you talking about? thats a decent system but if you plan on doing large 5lb runs then I would invest in an oven or a 10gal chamber so you can fit big enough slabs in there.
     
    I like those silicone heaters, how do you control them, a PID?
     
  7. I think they have a control on them. I hear they can heat the chamber within 15 minutes and have it ready to go. I assume you just put a platter of oil in there, let it heat up and adjust the pressure?
     
  8. oh I thought you meant a closed loop made from a pressure cooker, not a vac chamber :p
     
  9. #9 SivineDativa, Oct 11, 2014
    Last edited by a moderator: Oct 11, 2014
    No, I mean BHOGart is the extractor, the vacuum chamber is for extracting the butane from the oil and the heating pad is for heating the oil so the butane is more readily extracted. Edit: Will that work?
     
  10. yeah those heating pads look pretty cool, should work great if you have a good way to control temps
     
  11. I definitely think you see improvements with a vacuum oven over a chamber, but quality isn't the biggest thing, just the speed you finish in. I think it mostly has to do with the quality of everything that goes into it allows you to do a lot more. I think this is particularly evident when you compare vac ovens. An Across International oven is nice, but it's cheap construction and controller mean your temperatures won't be as consistent between your shelves and to be more stable you have to be much more watchful and work more slowly to do a similar job.
     
    A Yamato oven has a much higher quality controller and better construction (not to mention much nicer aluminum shelves which retain heat much better) so your shelves are much more consistent, and it has a much nicer seal; with the same pump you'll be able to pull a deeper vacuum and hold it longer, which means you'll be finishing your oil much faster. And so on a CascadeTek vacuum oven has a really excellent controller which allows you do do things like have controlled temperature spikes allow you so finish even faster.
     
  12. Yamato ovens are solid as fuck, thats what I would get if I was to get one.
     
  13. #13 midnittoke, Oct 26, 2014
    Last edited by a moderator: Oct 26, 2014
    Chamber lowered into oil/water bath with hot water heating element.. (Size depends on volume of liquid you are heating)

    Simple PID controller will give good stable temps if you are a DIY kinda guy


    Sent from my iPhone using Grasscity Forum
     
  14. My boy I run with brought up the idea of buying a vac oven, due to the size runs we do.. (3pounds comming up..) Dont know much about um but Im guessing it is only improving run sizes, and purge times correct? $2,000 worth it?
     
  15. it does not speed up your purge! Please do not think that, soooo many people like to think they got a nice oven and pump that they magically dont need to purge as long. it would be a very very minimal improvement.
     
    The only thing an oven will really help you with is how much you can purge at once. With 4 shelves you can be purging 4 different runs or have a couple fat runs split up. It really just makes it easier to run more material and purge it all. If you have a regular chamber, you would have to wait for that slab to be done before you can do any more. you could have a few chambers but that that point it would make more sense to have an oven.
     
    Ovens are great for production, but it doesnt mean you have less work to do, it means you can do more work if anything :p
     
  16. Word! No doubt, Jimmy be comming through. Dont get me wrong I love the chamber vac process, Im not worried about less work, shoot. I make music all analog, record with 4track cassette tapes and all that long process lol. Im used to more work, cuz less is boring!

    But, maybe down the line, if we keep these big runs up, oven may be needed
     

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