Some herb grinders have screens, and the screen allows trichomes to pass through and be collected. This is the same mechanical principle as using a sieve to produce hashish, more commonly called hash.
An herb grinder with a screen allows people with limited amounts of marijuana to produce hashish on a small scale. The hash powder can be consumed as is, or pressed into hashish.
Until the trichomes have been pressed, they are often referred to as hash powder or kiff (also spelled kef, keef, kief, kif). However, it is not necessary to press hash powder into hashish.
Pressing is done to preserve the potency of hash powder if it is going to be stored for more than a few months, or to compress the powder so it takes up less space, or to ensure that the powder doesn't get blown away.
This simple tool shown below can press a couple grams of hash at a time. It is made up of 5 pieces (picture I). The main body is made so that 2 plastic pins, shaped like wood dowels, can fit snugly inside (picture II).
Powder is placed between the two pins and the end caps are screwed on. As the end caps are screwed on they force the pins together. Any hash powder in between the pins gets pressed into hash (picture III).
Wait 8 hours or longer to remove the hash from the press, but don't leave it there for more than a few days or it can get very hard to remove from the press.
The pressed hash can be stored until you are ready to use it. Store in an air tight container in a cool place away from light. It can be smoked or made into some other form of cannabis, like food or drink.
For smoking purposes, rolling about 1/4 gram, or less, of hash per joint is recommended for your first attempt. After a few tries you can adjust the amount of hash you use.
Crumple the hash with a sharp knife, scissors, or something similar. Hash broken into small pieces that are somewhere near the size of large grains of sand (not much smaller or larger) is optimal for smoking in a joint.
A bit of finely ground, slightly larger than grains of sand, tobacco or marijuana should be mixed with hashish and rolled into a joint. Prior to rolling, the tobacco or marijuana should be mixed thoroughly with the prepared hash.
A mixture of about 3 parts hash to 1 part tobacco or marijuana will help keep the joint burning. A hash/tobacco mixture is recommended if you want to really taste the hashish, marijuana masks the taste.
A pure hash joint is the best way to evaluate the taste of the hash you are smoking. It is a bit harder to roll and smoke a pure hash joint, but it can be done.
If the hash is not broken into sand grain size pieces prior to smoking it in a joint, burning pieces can fall from the tip of the joint when it is being smoked.
Not only will these pieces be wasted, they will burn whatever they land on. It is best to smoke hash over an ashtray so any pieces that fall from the burning end don't do any damage.
If you plan on smoking the hash in a pipe, try using pieces that are about an 1/8th of a gram (or smaller) and adjust the size to your preference. After a bit of practice, you will be able to determine the optimal size for your needs.
Hash is very potent and can be hard on the lungs. To get the most out of it, try taking small deep tokes and hold them in for as long as possible. Large amounts of hash inhaled deeply will usually cause a smoker to cough.
A very thorough guide on making various kinds of cannabis concentrates. Includes information on selecting and collecting material, how to make hashish, vaporizers, how to make hash oil, tinctures, capsules, edibles, topical use, and more.
Beyond Buds: Marijuana Extracts
The Cannabis Encyclopedia
Easy to read with comprehensive focus on growing and consuming for medical and recreational purposes. This will be of interest to growers, patients, caregivers, consumers, or anyone interested in consuming, growing, or producing cannabis products.
Over 2,000 color images on 596 pages. Loaded with recent information covering all aspects of marijuana. The grow section explains hydroponics and soil growing, growing indoors, outdoors, and in greenhouses.
The Cannabis Encyclopedia