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A week or two ago, I saw we had a bottle of isopropyl alcohol and decided I'd make some hash with it. It occurs to me that while it's a bit off-topic as it's not coffeeshop related, I've also noticed that as far as I remember it's never been mentioned here. So, I thought I'd put some info out there in case anyone was interested.

QWISO hash is "Quick Wash" Isopropyl Hash. You make it by soaking your material in isopropyl alcohol, (I use 91% because it's the highest concentration I can get.) then you strain the alcohol out into a glass plate or pyrex dish to let the alcohol evaporate. After all the alcohol evaporates, use a razor blade to scrape up the hash.

So you grind up your bud, shake, trimmings, stems, vape duff, whatever you got, and throw it in the freezer for an hour or so. Then, put it in a glass container at least twice as large as the amount of weed you're working with. Pour the isopropyl alcohol over the weed, completely submerging it and some. Gently stir the mixture for up to about a minute or so. In my experience, letting it soak in the isopropyl for more than a minute just gets you more chloryphyll and other non-active ingredients and you end up with a dark green sticky goop thats more like runny sticky bong resin than hash. What you want is the alcohol to absorb the THC and cannabinoids but not pull the inactive compounds as well.

I then take two strainers, and put a couple coffee filters between them. I hold them over a large pyrex dish, and strain the isopropyl through so that the strainer catches all the weed and all that goes through the coffee filter is isopropyl. (I can take pics next time if anyone cares). I then take the alcohol-filled dish and place it in front of the window with a fan blowing on it to speed the evaporation process. Depending on how much you have to evaporate, it can take from a couple of hours to a couple of days. Since the other 9% in my 91% isopropyl alcohol is made entirely up of water, as long as I wait until all the alcohol evaporates there are no worries that there's anything harmful or dangerous in the hash.

Then, once its dry, use a razor blade to scrape it up, smoke and enjoy!

You can also made hash from your grinder, as long as it's gotten a decent amount of use. Just soak the grinder pieces in isopropyl, then pour into a glass/pyrex dish and let the alcohol evaporate. If you've never done this, you will be amazed at what you'll get. I was using a grinder on a daily basis for more than a year before I did this and got more than a gram out of it. What scrapes off the dish is a light colored powder, as it's made almost entirely of trichomes.

I've got a vape whip I want to try this on, since I assume that concentrated vapor has to have an extremely high THC content.

I searched and found someone posted instructions here more than 4 years ago. He suggests using heat to boil off the alcohol. Don't do it. It's dangerous, and you're probably cooking off some of the thc.

I did this one year ago, not with weed but to make salvia divinorum extract, and it works very well

ZBeebs wrote:I searched and found someone posted instructions here more than 4 years ago. He suggests using heat to boil off the alcohol. Don't do it. It's dangerous, and you're probably cooking off some of the thc.

i made this stuff loads of time, always used a paint stripper gun to evaporate alcohol, its not dangerous as theirs no naked flame & if u do it near an open window the fumes wont be a problem,
& as long as u dont leave the gun over a certain spot, the thc will be fine, just keep moving it from side 2side

ZBeebs wrote:I searched and found someone posted instructions here more than 4 years ago. He suggests using heat to boil off the alcohol. Don't do it. It's dangerous, and you're probably cooking off some of the thc.

I've done this a few times aswell, I just place a small pyrex bowl with the isoprop thc mixture in it into a large pan half full of water and leave it on a low to mid setting stirring occasionally until im pretty sure ive gotten rid of all the liquid - but I have an electric hob wouldnt dare try it on a gas one due to the fumes being given off....

I let mine soak for about an hour then strain it through a coffee filter using a little more isoprop to clean the used filter to wash out any alcohol/thc goodness absorbed by the filter.

Letting it soak for an hour is 58 or 59 minutes too long. You're making a very impure product. Anything longer than a minute or two and you're smoking chlorophyll and other inactive ingredients.

Yes, it cuts down your yield, but the point is to make potent hash, not crappy hash. Its called Quick Wash hash, not soak for hours hash for a reason.

ZBeebs wrote:Letting it soak for an hour is 58 or 59 minutes too long. You're making a very impure product. Anything longer than a minute or two and you're smoking chlorophyll and other inactive ingredients.

Yes, it cuts down your yield, but the point is to make potent hash, not crappy hash. Its called Quick Wash hash, not soak for hours hash for a reason.

Thanks, I thought an hour was reasonable -I guess not so I'm gonna try your method next time and see how much of a difference it makes in potency.

i soak mine longer and it turns out great. i use stems or w/e is around so thats why. to speed the evap process i use the hairdryer.

If you've always let it soak for a long time, try it my way, then do another soak for as long as you want with the same material. You won't get nearly as much on the first extraction, but the resulting product will be strong and tasty.

I think USBL will be able to shed some light on the long soak vs. short soak?

just use butane. soooo much quicker.

Can you just use what's left over from vaping ?
Will have about an oz. in a little while and would like to try it out, but don't want to waste it as I know there are other things you can do with it, but they are more complicated.
All of the left over is from good Cali medicinal of varying strains.

Found this after Googling QWISO

http://forum.grasscity.com/harvesting-p ... rials.html

Can you use this method on grinders etc ? as in i dont know !? say put grinder/s in the Iso soak for a while evaporate then thc left in bottom ?

Any help appreciated

cisco wrote:Can you use this method on grinders etc ? as in i dont know !? say put grinder/s in the Iso soak for a while evaporate then thc left in bottom ?

Any help appreciated

Yes! Soak the pieces individually in a small dish, with just enough iso to cover them. Let each piece sit in the dish a minute or two, stirring/shaking a bit. Then remove the piece and pour the iso into a tray to evaporate. Repeat with each piece. No need to strain.