Of course, first you must understand what kief is and why you’d want to press it…!
If you’re looking for what I call the “goodies” (THC, CBD, and the other cannabinoids) from the cannabis plant, the most concentrated amount of them are on the tiny, stalk-like trichomes or resin glands found on the flowers. These trichomes are effectively filled with the goodies, so they are very strong, and when collected, they are called kief (when compressed greatly, it’s called hashish).
You can collect kief in large commercial quantities by using a combination of cold temperatures (which makes the trichomes brittle) and solvent (butane or alcohol) or very cold water and “bubble bags”. But for most users, whether recreational or medical, the easiest way is simply to use a 4-piece grinder when grinding your cannabis. Then the kief falls through a screen, where it can eventually be collected.
The problem with loose kief is that basically the only way of using it is to sprinkle it on something, such as some cannabis you’re going to smoke or vaporize, or perhaps into some milk for instant canna creamer. But if you have a kief press, you can turn out little hard pucks of solid kief, which can be smoked or saved for a special occasion.
So without further ado and by special Ently permission, here is the wonderful instructions on how to make your own personal kief press, by reddit user dugbyrump…at no cost whatsoever!