How to Make Cannabis Oil

How to Make Cannabis Oil

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Step by Step Instructions by Jeff Ditchfield

First, it’s important to stress that the better the ingredients, the better the cannabis oil. Ideally, you want to make cannabis oil from plants that have been grown organically without the use of pesticides.

In this tutorial we will be making cannabis oil from the bud (or flower) of the female cannabis plant. This is where the highest concentration of cannabinoids are produced. Cannabinoids, namely THC and CBD, are the active medicinal compounds we want to extract from the bud when making oil. Both THC and CBD have been found to have great medicinal properties when treating cancers. The strain of cannabis used in the tutorial video is called “One to One”. This strain was chosen because its buds produce a 1:1 ratio of THC and CBD. However, you can use any strain you like.

Step 1 Grind the Bud

Break up your pre-dried bud by giving it quick bursts in a blender, one small handful at a time. Once the handful of bud is well separated, pour into a container and repeat the process until all the bud has been separated. The aim here is to break it up but not so fine that it becomes a powder. Once complete, remove any larger stalks and unwanted plant matter.

Step 2. Add the Solvent

add the solvent

A general rule of thumb is to soak approximately 1.5 litres of solvent for each 100g of dry cannabis bud.

190-proof Ethanol (alcohol) can be used however, this could be very difficult to acquire in many country’s. Ethanol can be substituted with more accessible solvents; A popular alternative is to use Isopropyl. However, Isopropyl Rubbing Alcohol (IPA) is NOT recommended because it’s known to contain unwanted chemical additives.

Step 3. Mix the Solvent With the Bud

Leave the bud soaking in the solvent for approximately 10-20 minutes while it is being stirred by the magnetic hot-plate-stirrer. At this stage of the process, do not apply any heat; simply ensure the bud is being well mixed within the solvent.

Step 4. Filter the Solution

filter solution

The first stage of the filtration process is to dispose of the plant matter; it is no longer useful because all of its cannabinoids have been extracted and are now dissolved in the solution. Simply pour the liquid into another container through a metal sieve and dispose of everything the sieve catches.

The second stage of the filtration process (pictured) is to remove the smaller particles of the plant material. To do this, line a funnel with an unbleached coffee filter and pour the solution into it. It will take some time for the filtration process to complete, but when it does you’ll be left with a purer solution minus any left-over plant matter.

Step 5. Remove the Chlorophyll

filter solution

This step is optional.

You’ll notice that the solution is green. This is because along with extracting the cannabinoids, chlorophyll from the plant has also been extracted. If you want to reduce the green color from your cannabis oil, put the solution in a clear glass container and leave it in direct sunlight for approximately one hour.

Step 6. Evaporate the Solvent

evaporate the solvent

The most economical way of evaporating the solvent is by using a distiller because it re-captures the solvent after it has evaporated. This allows the solvent to be re-used at a later date. Alternatively you could use a rice cooker for this step if you don’t mind the solvent evaporating into the atmosphere. Another advantage of using a distiller is that some models will automatically switch themselves off when the process is complete.

Upon completion, you will be left with a thicker liquid. Transfer this liquid to a smaller beaker ready for the final stages of evaporation and decarboxylation.

Step 7. Final Solvent Evaporation and Decarboxylation

evaporation and decarboxylation

At this point, a lot of solvent remains present in the solution so we need to boil it off. To do this place the beaker on the magnetic hot-plate-stirrer, start the solution stirring and apply heat.

You’ll notice in the video that once the temperature of the liquid approaches 78 degrees Celsius, it begins bubbling. This is because 78 degrees Celsius (172 degrees Fahrenheit) is Ethanol’s boiling point. Different solvents have different boiling points so learn the boiling point of your chosen solvent before you begin. Again, there is more information about solvents, including their respective boiling points, in the Medical Cannabis Guidebook.

evaporation and decarboxylation

As the remaining solvent evaporates, the levels will slowly decline and the temperature will slowly rise. The temperature won’t rise much higher than the solvent’s boiling point until most of the solvent has evaporated.

When the levels have declined and the temperature begins to rise, hold the temperature between 105 and 110 degrees Celsius to begin decarboxylation (221 – 230 degrees Fahrenheit).

Decarboxylation converts THCA into THC. Our bodies have a low affinity to THCA which is why if you were to eat a cannabis bud without first decarboxylating, it wouldn’t have a psychoactive effect.

evaporation and decarboxylation

Hold the temperature between 105 and 110 degrees Celsius for 1.5 to 2 hours. This temperature held for that amount of time will achieve a good decarboxylation. After a while, you’ll notice the bubbles getting much smaller. However, for as long as bubbles are present, so is solvent.

After the decarboxylation period has ended and when the smallest of bubbles have disappeared, congratulations: you have now made cannabis oil.

Medical marijuana and cannabis oil in syringe

Disclaimer: This guide is for educational purposes only. We cannot be held responsible for any harm or loss incurred by viewers attempting to make cannabis oil by following information provided in this video or on this website.

Special Thanks to Jeff Ditchfield for this video tutorial

By his book  Medical Cannabis Guidebook