To make cannabis rosin, sandwich cannabis flower or hash inside a micron filter bag, place it between sheets of parchment paper, and apply heat and pressure with a rosin press. The heat softens the resin glands, the pressure squeezes the oil out, and the parchment catches it. No solvents are involved, which is why rosin is classified as a solventless extract.
What Is Rosin and Why Press It at Home?
Rosin is cannabis resin that has been separated using only heat and pressure. Because nothing but heat touches the plant material, the resulting oil keeps much of its original terpene profile and needs no purging or evaporation step.
Home pressing takes minutes, produces a dabbable product immediately, and lets you control temperature and pressure to favor flavor or yield.
What Equipment Do You Need to Make Rosin?
- A rosin press with heated plates, or a hair straightener for very small batches
- Parchment paper rated for high heat
- Micron filter bags, roughly 90 to 120 micron for flower and 25 to 45 micron for hash
- A collection tool such as a dab tool or small scraper
- A cold surface or ice pack to set the oil quickly
- Nitrile gloves and a scale accurate to 0.01 grams
How Do You Prepare the Cannabis Before Pressing?
Flower should sit at roughly 58 to 62 percent relative humidity so the resin flows instead of shattering. Rehydrate dry buds in a sealed jar with a humidity pack for 12 to 24 hours before pressing. Remove stems and large fan leaves, then break material into pieces that fit your bags without packing them tight.
Hash, kief, and bubble hash press with higher yields and lower temperatures than flower. Sift or break hash into an even layer inside the bag so pressure distributes across the whole puck.
What Temperature and Pressure Should You Use?
Most flower presses run between 180°F and 220°F (82°C to 104°C), with lower temperatures favoring terpenes and higher temperatures favoring yield. Hash and kief usually press between 150°F and 190°F.
Apply pressure slowly over 30 to 60 seconds and hold for 60 to 180 seconds total. Rushing the ram causes blowouts where plant material bursts through the bag and contaminates the oil.
How Do You Press Cannabis Into Rosin Step by Step?
- Preheat the plates to your target temperature and let them stabilize.
- Fold a sheet of parchment into a channel that will catch the flow.
- Load weighed material into a micron bag and press it into a flat puck.
- Place the puck in the parchment and center it on the plates.
- Close the press gradually until you feel resistance, then keep adding pressure.
- Watch the oil run onto the parchment, then release pressure once flow stops.
- Pull the parchment out and move it to a cold surface.
How Do You Collect and Cure Rosin?
Chill the parchment for 30 to 60 seconds so the oil firms up, then lift it with a dab tool in one smooth pull. Warm tools make the rosin stringy and hard to handle, so keep your tool cool.
For cured rosin, seal the oil in a glass jar and store it in a refrigerator for several days, then whip it with a tool until it turns opaque and creamy. Store finished rosin cold and away from light to slow terpene loss.
What Yield Should You Expect?
Flower typically returns 10 to 25 percent of its starting weight in rosin. Hash and kief can return 40 to 70 percent because the resin is already concentrated.
Yield drops when material is too dry, when the temperature is too low for the starting material, or when pressure is applied too fast.
Is Making Rosin Legal?
Cannabis rules vary by state, and home extraction may be treated differently from simple possession. Check your state's regulations before buying equipment or pressing material. Never press cannabis in a jurisdiction where it remains illegal.