Freeze Drying Bud and Commercial Freeze Dryers

Discussion in 'Harvesting And Curing' started by Stoner Smurf, Jan 13, 2011.

  1.  
    Stoner Smurf

    Stoner Smurf Active Member

    According to Ed Rosenthal's Marijuana Grower's Handbook, which on a side note is hands down the best growing book I've read and I've read 7 or 8, the best way to dry/cure your bud is by freeze drying. After letting it hang for a few days you put it in a freeze dryer. Freeze drying uses sublimation to remove the moisture from the bud. It's suppose to preserve the terpenes (did I spell that right?), which will preserve great flavor and aroma. Freeze dry cured bud is supposed to be incredibly smooth.

    Since the book has been so great I tend to believe it, and I've heard this before else where. I actually saw a post on RIU of someone using dry ice to cure the bud. You put dry ice in the bottom of a container (the container must have holes on the lid. Don't think anyone is going to read this little post and try it without further research, but just making sure.), put a thin layer then put your bud on top. I think this uses sublimation as well, just in a different way. That would be very inefficient way to cure a lot of bud and very expensive. A commercial freeze dryer uses a vacuum to dry the bud.

    That's where the problem lies. I want to try this, but a commercial freeze dryer cost $9,000.00 +++. How hard would it be to make one of these? Take a normal freezer, put a vacuum chamber made of reinforced steel in there, hook up some pumps, and boom freeze dryer. Obviously there's probably a few more steps in there, and a fridge might actually work better since a freezer may get too cold, but do I have the right idea? Any engineering folks around here, am I on the right track? Can a commercial freeze dryer be made at home if the right amount skill and care is put into the vacuum chamber so there are no implosions?

    My other question to anybody is has anyone ever seen freeze dry cured weed or done it themselves. I don't want to spend $2000 on parts or god forbid $10,000 on a commercial freeze dryer and find out Ed was lying to me.
     
    gb123 and vostok like this.
  2.  
    kevin

    kevin Well-Known Member

    the frost free freezers has a dehumidifier built in them that take all the moisture out of it, more less freeze drying. you could do a small sample bud and report back. i've never tried it myself.
     
  3.  
    Smot360

    Smot360 Well-Known Member

    .......This has me very interested! I personally have never heard of a technique like that but I'm sure its worth a shot! When you freeze dry produce and such it retains alot of the nutrients that would be expelled when you use the sun, air, ..etc...... NASA sends their astronauts up with food that has all been freeze dried because of the weight that has been removed. This could be a breakthrough in curing weed on a mass scale! My only concern is that the freeze drying method is so good at what it does by removing all water is that, the weed would have absolutely no water and would end up burning faster than a cali wild fire! Not all of the water is removed from the weed in the curing/ drying process. You would have to come up with some way of knowing when the bud was ready before you cure it too long and it ends up like some crispy potato chip lol. If you could figure out how long the process takes and you have it down to a science (without destroying the weed) I really do belive it could cut the standard curing/ drying process time into fractions! Like I said this could be a breakthrough! I do have a meat freezer in storage and this conversation has me thinking of going and getting it out and than designing the freezer into a drier. I myself find work as a drafter, and I tend to think of myself as an amateur engineer. I Believe with a little time, effort, and some more input from people, I could get this done in a week or so. Now to make it work and work right the way you want.......I have no idea rofl!
     
  4.  
    i81two

    i81two Well-Known Member

    I just got done hang drying some buds in some really cold weather and it took 26 days and the flavor is the best ever and ive been growin that strain a while.
     
  5.  
    YThor

    YThor Well-Known Member

    I have extensive freeze-drying experience when it comes to plant parts; the main reason that DIY freeze-drying may not work well is that unless there's a trap in there to capture the moisture, you dump the water into the pump oil and it gets foamy and messy. Just as important, once there's water in the oil, the effectiveness of the pump is shot because of the vapor pressure of the water: you can't draw a good vacuum with gunked up pump oil.

    Traps don't have to be sophisticated or expensive, but unless you like recharging your trap with dry ice (for a dry ice + acetone trap, which will give you something like -79C) on a regular basis, a refrigerated trap is recommended- hence the cost.

    There's also an implosion hazard; of course, one can use good plastic (or even metal), which greatly reduces the risk.
     
  6.  
    resinhead

    resinhead Well-Known Member

    Bump! I would like to see some more recent info on this topic!
     
  7.  
    Sublimator

    Sublimator New Member

    Old topic but one I have some interest in and may be able to help. I've recently taken up interest in freeze drying and been doing some research into applications and of course drying bud quickley came to mind to which led me to this place. Being a refrigeration mechanic by trade I have some knowledge about pulling vacuums and what not. My idea for you guys if your serious about trying to rig up a cheap setup is as follows.

    Pressure cooker drilled and tapped with brass MIPxflare fittings hooked up to a copper coil that has been looped inside a freezer. Copeer coil the exits said freezer and is hooked into vacuum pump. The pressure cooker should solve the implosion risk and be able to withstand deep vacuum. The freezer with looped copper coil would remove the moisture from air before hitting vacuum pump and contaminating oil. From what i understand of the process the material should be frozen as well so maybe pressure cooker and coil setup could all be inside a deep freeze?

    Anyways if you guys are still into this topic lemme know what you think and if your going to try id like to know results.
     
  8.  
    Danielle Sheridan

    Danielle Sheridan New Member

    Hello EVERYONE! I own a commercial freeze dryer, AND I have freeze dried medical cannabis. It was dried in less, than 12 hours and came out BEAUTIFUL!!! The color was electric, the smell was VERY fragrant, it broke up perfectly, AND THE TASTE WAS AMAZING!! Did NOT trim before hand, as you can trim after with ONLY using your fingers to easily break off the leaves, which are perfectly dried, IN A FRACTION(1/10th of the time) of the time needed doing it wet. The "clippings" were ready for making edibles. NO MOLD OR FUNGUS OR DANDER WORRIES ( compromised immune systems)/ NO WORRY OF SMELL WHILE DRYING/ NO TIME HARDLY/ NO WORRY OF TOO HIGH OF TEMP WHILE DRYING!!! THIS IS THE FUTURE!!! ANY QUESTIONS OR COMMENTS???? :)
     
    ChrisDuke and docter like this.
  9.  
    Mr.Goodtimes

    Mr.Goodtimes Well-Known Member

    Interesting....
     
    docter likes this.
  10.  
    Abiqua

    Abiqua Well-Known Member

    This is the one I would go with...Spend it to make it/save it....

    http://harvestright.com/store/

    japanese made I believe...all the hash makers on Hashchurch...drool all over these... :peace:
     
    PerroVerde likes this.
  11.  
    missgrn29

    missgrn29 Member

    This is an interesting concept. I know a lot of people freeze their bud/trim before making butter or oil for edibles because it (supposedly) makes it easier for the trichomes to fall off. So would drying with this process and then handling it not make your bud less potent the same way using an automatic trimmer would? By knocking all the trichs off? I'm not trying to insult anybody's methods. Just curious.
     
  12.  
    SunnyGarden

    SunnyGarden New Member

    I would love to know more about your process.. What type of Freeze dryer did you use?
     
    budolskie likes this.
  13.  
    hd deuce

    hd deuce Member

    u still don't believe in nasa do u

    its fact they didn't go to the moon

    fact they don't go to space

    google nasa commercial

    where they talk about needing to invent electronics to pass through the van belt of radiation to get to mars
    if they went to the moon they would have passed through this belt

    so why do they need to invent something they had 50years ago


    mr kubric famous movie maker clockwork orange


    came out and proved he made phony video for nasa about moon landing

    just google the subject learn for ur self

    they got caught using green screens a dozen times

    their videos of space walk are actually done in water tanks also proven by footage
     
    Abiqua and budman111 like this.
  14.  
    hd deuce

    hd deuce Member

    nice\\\\

    im buy-in one tomorrow

    u just rehydrate it to smoke or is it smooth as is
     
  15.  
    hd deuce

    hd deuce Member

    nasa is a scam
    moon landing hoax

    google it

    stately kubric famous movie maker clockwork orange came out admitted he did fake moon movie footage

    time to open our eyes
     
    budman111 likes this.
  16.  
    hd deuce

    hd deuce Member


    FREEZE DRYING IS THE ONLY WAY TO DRY UR BUD

    EVEN WITH UT A CURE ITS SMOOTH SMOKE TASTEY AND SMELLY TERPENES OUT UR ASS IF THAT THE BUZZ WORD OF TODAY

    WE USED TO SAY DANK

    HARVEST RIGHT HAS FREEZE DRYERS FOR $3500

    HERE HOW TO MAKE UR OWN

    DIP UR BUD IN LQUID NITROGEN

    PUT IT IN A VAC OVEN BY BEST BUY VACS ($100) SET HEAT MATT TO LOWEST SETTING


    PUTTING YOUR HERB IN A FROST FREE FREEZER WOULOD TAKE MONTHS TO GET THE MOISTURE OUT

    FREEZE DRYERS USE MINMAL HEAT TO SUBLIMATE REMOVE WATER UNDER VACUME

    NO TERPENE LOSS WITH FREEZE DRYERS

    WE TESTED BEFORE AND AFTER WITH A GC UNIT AND NO TERPENSE LOSS LIKE TRADTIONAL DRYING METHODS

    GO TO BEST BUY VACS SMALL SCALE BUT MOST ONLY NEED SMALL SCALE

    FREEZE DRYING
     
  17.  
    hd deuce

    hd deuce Member

    THAT WOULOD TAKE MONTHS TO SUBLIMATE THE MOISTURE BUT IN THEORY YES IT WILL WORK BUT MONTHS LIKE 6 MONTHS TO DO IT THAT WAY

    HENCE THE TERM FREEZER BURN ON MEATS
    ITS BECOME DRY FROM MOISTURE LOSS

    DIP IT IN LIQUID NITROGEN THEN SET ON A Rack over a minimal heat source the moisture will vape via straight to gas and leave u with bone dry herb

    then put in jars with humi patch to get back to 60 % or so RH in ur jar and u have best connoisseur bud around

    we still do 4 month cure not for terpenes taste but to allow chlorophyll to breakdown true connoisseur bud.



    even with out the cure our freeze dried bud is smooth


    side benefit 4month into cure it look like its still alive
     
  18.  
    bjph

    bjph New Member

    I have some data on this
     
  19.  
    hd deuce

    hd deuce Member


    This method I derived to handle 400 lbs per cycle

    U can scale it down

    Like this for home use

    In a closest or entire room
    Depending on quantity

    Seal room


    Get hanging rack with scale
    Load rack with1100 grams

    Use liquid nitrogen spraying
    $1200
    Spray product

    Use small space heater 65f
    Blow towards wall thT has rack above it
    Keep heater going for 7 minutes

    Start dehumidifier on highest setting
    When rack weighs 280 g
    Place in plastic bin
    With hygro meter inside

    RHshould b60-65 RH
    If it stay at 65rh for 24hr
    Move to jars
    It's already smooth from freeze drying
    Super smooth
    But the jars take an already wow terpene profile and super cure that taste and aroma in
    Moisture allows anaerobic degradation. Of the chlorophyll
    Which = bomb connoisseur bud

    Cure for 3 -6 months

    This method u can stop drying before its solid dry no moister
    Dry bud. Though smooth. Is smoother with a nice perfectly hydrated bud
    Joints. Not smoke nice all dry ass

    Bonus way cheaper than commercial unit
    Plus it can accommodate any room u can fill
    Not to many homegrown dry n cure more than 5lb personal harvest

    300lld can lb easy in a large bedroom
    With
    Adequate dehumidifier

    Another bonus.
    Less handling


    The bud ur going to sell later or smoke later if ur harvest to large to sell within a month
    Freeze dry after first 3 week cure Til
    .....
    Bone dry
    Then rehydrate with fresh bud or RH gel pack prir to needing it

    Bonus again
    The
    Buds 6 months later appear days old when u store them bone dry n rehydrate to smoke or sell


    Shatter. Dehydrate bud Til
    bone dry


    I use this from this method for shatter to keep insane terpene profile

    Dry seive buds
    Collect kief
    Use 160 then 90 then 70 screens
    Use 90 kief
    Large and small plant material is caught

    U can add more ethanol and filter plant material if u choose
    Only if u have plant. Matter
    Avoid plant matter by min sieve time

    Then use reading lace over bud and discarded kief for edibles


    Decarb in VAC sealed bag in boiling water

    For kief that's high end
    Use for shatter
    Add just enough ethanol to dissolve kief to thick oil consistency
    Super thick
    Warm to pour out easier
    Place on. Blast Matt
    Then put Matt on griddle at 45f
    12 hrs per side

    Wam. Best tasting. N smelling shatter ever
    No terpenes lost

    None

    No chlorophyll leach

    We avoid it with using kief
     
    Last edited: Jun 17, 2016
  20.  
    vostok

    vostok Well-Known Member

    LATE: Stoner Smurf, Jan 13, 2011

    There's always a hidden cost ..for this is why I prefer water cured weed

    done and dusted in 10 days

    no lengthy hangs

    no messing with Bovedas

    good luck
     

Share This Page