Go on ebay, find two nylon bags one that is 150 micron, and another bag that is 100 micron or smaller (don't go below 50 micron, or you'll leave too much good stuff behind with the low grade hash). Just type in 'nylon 150 micron' and 'nylon 100 micron' and you'll find some decent bags, for less than a total of $15 for both. You can alternately buy a third bag that is no larger than 20 micron, place your hash inside, and run water through... whatever falls below with the water, isn't worth catching, unless you're working with an incredibly small-glanded sativa.
Now using an electric coffee grinder, take your very-dry material and grind it to a semi-fine grade.. a bit more fine than you'd have a joint. You have two options; you can place your ground plant/herb inside the bag and slowly sift it as-is, over a collection dish or plate, or you can very, very carefully use dry ice and buckets that are small enough that your mesh can fit over the mouth, with the herb and dry ice inside. I've provided you with a brief youtube video tutorial below, as an example. Once you've sifted through the 150u (u = micron) bag, take the dirty hash from that collection plate, and put it through the smaller bag. If you have a third, smaller bag, you'll be washing the material from the final collection with it.
Do not discard the 'waste plant matter' just yet....
http://www.youtube.com/watch?v=1buSgDNfGFQ
This is what I make using nylon bags, without dry ice... takes about 10 - 20 minutes to get 10 or more grams of hash using just a small bag, and processing manually by hand. With larger bags and more material you can produce much, much more in the same time.
You can also buy machines that 'tumble'-sift for you, or if you're crafty, you can very easily make your own. In the past, I've used large 20 - 40 gallon tupperware crates with layers of nylon screen fixed to frames, in layers, collecting all various grades of glandular material.
Once you've finished sifting for hash it can be pressed with a little heat, it can be used for making smokable/vapable oil, it can be used for edible oils as well.
And finally after you've finished sifting, using the remaining
'waste plant matter', you can take grain drinking alcohol that is high proof, such as 190 proof everclear, or even isopropyl alcohol, to extract the last of its goodness, and evaporate off the alcohol, to create a concentrate. 'Alcohol/Iso hash' is easy to make (you can also opt to do this, instead of sifting as well, for a larger return).
Just soak in alcohol for 10 - 60 seconds, the longer the wash the more potency you'll get, but also the more inert plant matter you'll pull in. Once it's soaked, you'll first strain using cheesecloth, to remove the bulk of the plant matter, then a fine hemp filter, or even a coffee filter, to remove all the fine particles and emptied trichome husks/cuticles. Set the hashy alcohol by a fan in a wide, shallow dish to expose as much surface space as possible, and allow the alcohol to evaporate. Eventually you'll have some golden (or green-ish with a longer soak) concentrate.
A medium-long soak...
If you give it a long soak, I'd recommend it for smoking, or infusing with coconut oil for cooking.... a 'dirty' concentrate can gunk up a vaporizer. But, if it was a fast rinse, 15 seconds or less, it should be perfect for clean vaping, as well as for cooking and smoking. Many medical patients would insist on using grain or drinking alcohol for an extraction, rather than Iso, but the choice is yours.
And if you really want to let nothing go to waste, you can buy organic beeswax, water-wash your stem material using distilled or RO water, shred it, and make your own hemp wick.
