Here are a few different methods for safely making cannabis concentrates.
Many new solventless processes are emerging, such as sonication, but the most commonly used solventless processes are as follows.
1. Shaking, Sifting, and Dry Sifting-Used to Make Kief
Believe it or not, you’re making kief every time you use a grinder. That residue that collects at the bottom of your grinder is kief, and it can be sprinkled on joints or in your bowl to make your hit more potent.
Just as there are many ways to skin a cat, there’re many ways to make kief, and most of them are safe and legal as long as you’re in a legal state.
The oldest, safest, and most tried-and-true method is to shake the plant material through the mesh.
This can be done in many different ways. It’s common to grind the plant and run it through a silkscreen machine; others like to use a hashish drum.
Whichever method you choose, the finer the screen, the purer the kief, which can then be pressed into different grades of hash.
2. Ice Water Extraction
Ice Water Extraction is used to make kief which is then pressed into bubble hash.
Contrary to popular belief, bubble hash has been around since about the 80s. The method was invented by Cannabis Seed Bank owner Neville Schoenmakers.
It’s become more common in recent years with the availability of cheap and economical washing machines. A Bubbleator or similar washing machine can be purchased for $100 to $300.
This is one of the cleanest and safest ways to make high quality, very pure hash with no adulterants. This method does tend to leave behind many desirable cannabinoids that other methods don’t.
3. Heat and Pressure (Rosin Press)
Low heat and very high pressure are used to make rosin.
A rosin press uses heat and pressure to remove trichomes from the cannabis buds and leaves. Rosin can also be made from hash or kief.
The product is similar in appearance to extracts made with solvents, but with no added adulterants. Rosin can be very clear to very dark and in varying colors and is a very thick, viscous sap. It can be used as-is or converted into other tasty treats.