Weight pre and post Decarb?

Hey all, just a quick question for those that decarb their weed before pressing, extracting, grinding for pills, etc…

I’m now starting to try my hand at some extractions into oil and rosin/resin for infusing. So I took a couple of my vacuum sealed 1 ounce bags and weighed them again just for reference before starting the process. Each bag weighed a little more than 1 ounce, about 29-30 grams without the bag, 58-60% RH. I went ahead and chopped it up into a coarsely fine size per the instructions, and did a decarb on it through an imitation Magical Butter Machine as it has a preset just for doing that. However, when I took it out after it cooled and weighed it to start with the different processes, there was only about 65% of the weight from the beginning weight, or about 20 grams from each ounce. Both bags had hygrometers in them and they were reading a steady 58% RH before opening them.

Has anyone else ran into this problem? I ended up having to open and decarb a third bag just to make up the weight difference in the recipes. Instructions would say 1/2 ounce decarbed flower to 1 cup of MCT oil or add 2 cups of Everclear to 1 ounce of decarbed buds. I do understand losing some of the weight to the decarbing process, but it just seemed like a lot to me. Any thoughts? Thanks for any info that you have.

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I just de-carbd a QT jar full and in the freezer now.
Haven’t ever preweighed or post weighed anything :thinking::green_heart::sign_of_the_horns:t2:

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I’m like @StonedCold13 and never checked weight before and after. It probably is water evaporating from the buds. I used to decarb my weed ahead of making alcohol extractions but now do it post extraction. Either way works. Good luck.

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The heat from decarb plus very dry oven environment sucks what moisture that was in them out, decarbed weed is crispy dry. I never considered it, I just used dry weight as cured and went with it. I use an ounce of bud and an ounce of kief in each batch, plenty of horsepower in a pint of that oil!:rofl::oncoming_fist:

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How do you do it post extraction? Interesting thought for sure. I thought it had to be done pre-extraction? But, as said, I am brand new to this. Thanks!

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Thank you for the information. Just because I break everything down into 1 ounce bags of dried and cured bud, it never occurred to me that it would lose so much weight. And if the butter, gummy, MCT oil, or wax/dab recipe calls for 1 ounce of decarbed bud, I am presuming that it means weight after decarb, not prior, for proper dosing. Always something new to learn and experiment with.

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There are 2 ways I have done it. I dry my oil on a silicon mat a few days, then I put the mat on a cookie sheet in pre heated oven for about 40 mins or so to decarb ( different opinions depending on what video you watch). You will see lots of bubbling, that is decarb happening. When it slows down it is done. The other way I decarb if I make a big batch is in an oven safe sealed jar in a 240 oven for an hour.

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I guestimate my dosing as follows…If I start with an ounce of dried cured bud that’s roughly 20% THC, then there is 0.20 x 28000 of THC available for extraction (20% of 28000mg). Each ounce should have 5600mg of THC in it. During the decarb process you will lose between 15% to 20% of that, leaving you with about 4500mg, regardless of its current weight.

If I make QWET and use a bottle of Everclear, that works out to about 175mg per ounce of Everclear. I never get to squeeze it all back and lose 2 or 3 ounces of liquid to waste. You also lose that percentage of THC too, so still about 175mg per recovered ounce of Everclear.

I don’t let mine evaporate, rather pour the green mix into a glass (maybe a tablespoon, maybe an ounce!) and add orange juice. It makes the OJ go a little darker, but makes it bearable to drink mixed at 1:8 or so!

I like alcohol so have no issues dosing this way!

I’ve also decarbed kief. Kief is about 60% to 80% THC depending on the quality. Again, lose 15% to decarb process, but not as much weight as decarbing flower. I guess that each gram of decarbed kief is going to be between 500mg and 600mg. Can “confirm” that as I had 1/4 in a smoothie last Sunday and got pretty messed up, and it takes me about 120mg of store edibles to get not-as-stoned as I did!

Hope this helps!

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