Innovating Home Based Solutions

for MMJ Patients.

Cannabis Home Sciences focuses on improving people's lives through cost effective home based solutions using only what's available in the kitchen. All these innovations are available to home users for free. Consider this an Open Source project with contributions by the community, for the community.


The first project to be published is RSO 2.0 2021, an update to the classic recipe for making cleaner Rick Simpson Oil at home. Feedback and ideas are encouraged. Be part of future releases! Subsequent published projects will be hosted here with the goal of publishing annual updates with the latest developments.


Many thanks to Gray Wolf for his supporting advice to Yet-Another enthusiast repeating everything he has covered in the past. His advise has been instrumental. Links to his informative site are sprinkled throughout the documentation. His website aptly named www.GrayWolfsLair.com is an industry resource for technical discussions on cannabis oil extraction hardware and procedures.

Released projects -

RSO 2.0 - A Classic Recipe Updated.

1 February 2022

Making Cleaner Oil in the kitchen.

In the early 2000’s, Rick Simpson brought the healing quality of cannabis oil to the masses using simple extraction techniques. In the larger picture of extraction processes, this methodology is simple and oils are crude. Since the time Rick introduced his original process, the art of home extraction has continued to evolve. RSO 2.0 bundles up the best of these changes and adds a few interesting advances.

This project focuses on making cleaner RSO at home using simple consumer kitchen tools, foregoing the elaborate technologies like vacuum driven distilling or lab styled filtration systems. RSO no longer has to be burnt gritty tar.


Something borrowed, Something new, Something clean.

#1 - A room temperature form of 'Winterization' has been developed and used here for removing 'gums', a . These are unwelcome plant compounds contaminating RSO to this day. This new step has been named "Silting" since it can turn a wash into an algae pond. Silting works to collect phospholipids and proteins that can be quickly filtered out at room temperature. The magic? Lime Juice and Club Soda!


#2 - This new process embraces Isopropyl Alcohol as the bulk solvent for extraction, with Ethanol saved for the final reduction. Isopropyl's chemical characteristics have advantages over Ethanol for the bulk work. This means only 2 ounces of Ethanol is needed per extraction. Making safe oil with Isopropyl does require the use of USP-NF or higher grades of Isopropyl. Even at specialized prices, its half the cost of heavily taxed Ethanol.

The controversy over using Isopropyl for extraction has been debated ad nauseam for decades. The issue was studied and a post written. The Result? Cannabis Home Sciences endorses using USP-NF or higher grades of Isopropyl for home extractions. A safeguard for removing 'residual solvents' is built into the distillation step. Three lab test results are available for review.

#3. A novel addition to this process is using Brine water to drive distillation. By using Brine, the Isopropyl and water Azeotrope is momentarily suspended, changing the dynamics of simple distillation favorably in our advantage. This neat trick is only works with Isopropyl. The use of Brine during distillation has been significant at all sorts of different levels:

keep reading..

    1. Brine enables low heat extractions for saving terpenes and avoiding unintentional decarbing. Extractions can now be made across a wide range of temperatures starting as low as 65c/150f and upwards to 100c/212f.

    2. Water-soluble plant compounds, sugars, etc., are absorbed in the Brine, which normally gets boiled into the original RSO.

    3. Residual Isopropyl is completely removed during distillation. After the Isopropyl boils off, the oil is kept at a constant temperature for one half hour to evaporate residual traces of Isopropyl. Brine suspends the alcohol/water Azeotrope which plays a significant role of allowing Isopropyl to boil off separately from water.

    4. A common problem while distilling is 'burning' the oil on high heat devices (IE, the use of water distillers). This never happens now as the oil floats on top of the Brine water. The water buffers the oil from hot metal surfaces. Once the alcohol boils off, oil and water naturally separate making recovery easy.

Other improvements include:

    1. Set aside your coffee filters. Faster, more efficient filtering at home is accomplished using N95/KN95 masks.

    2. Adoption of the well known Cold Wash’ technique helps reduce unwanted plant compounds.

    3. Adoption of the well known Winterization’ technique removes unwanted fats and waxes.

    4. The final purge is made burn-proof using low power warming devices.


The introduction of Brine makes the use of Isopropyl Alcohol safe for home extraction. This in turn significantly reduces the costs of making oil. When the alcohol evaporates, the oil naturally separates from the water, floating on the surface. With the oil safely buffered from hot metal surfaces, the temperature is held for a half hour to guarantee all traces of Isopropyl have been removed.

Salt in the final oil is avoided because oil and salt don't mix just like oil and water don't mix. Steps are taken to wash any residual salts out of the oil after distillation.

Overall, there are now eight steps to make oil. Each step is presented in video with descriptive captions of the technique.

This website only summarizes RSO 2.0. A 'User Guide' and more complete ‘RSO 2.0 Shop Manual’ are available for a deeper exploration of each step.

Yields are decreased by nearly 1/3rd from what is normally expected. This makes sense when the trash is removed, the volume goes down, but the concentration goes up. Trading off junk for higher purity is a good trade.

That covers the theory. Here are three ways to make oil using these ideas.

Start simple, and when ready, add additional steps.

#1 Fast Path to La Brea. This uses the fewest steps and is most comparable to the original RSO. You do get cleaner oil with the Brine aborbing the water soluble impurities.

#2 Slow Path. Silting is added to remove fats and proteins.

#3 Slowest Path. Lastly, Winterization is added to remove waxes. This is the cleanest oil but takes 2 days.

#1 Fast Path to La Brea, a clean RSO. Extraction in an afternoon.

The following subset of videos are the fewest steps to a fast and clean RSO. Even cleaner oil can be made using the slower approaches presented below.

Step 1: Decarbing
Step 2: Washing and Straining
Step 5: Distilling Slowly with Evaporation
Step 6: Collecting
Step 8: Reduction

#2 Slow Path for making a cleaner RSO. Extraction in a day.

The following adds Silting for a clean RSO. The finest oil can be made using the slowest approach presented below.

Step 1: Decarbing
Step 2: Washing
Step 3: Silting
Step 5: Distilling
Step 6: Collecting
Step 8: Reduction

#3 Slowest Path making the cleanest RSO with attention to detail. Extraction in two days.

Here is the full time consuming process. This involves using the freezer for Cold Washing, Silting and Winterizing. The inconvenience of longer processing time is offset by making the cleanest oil.

Step 1: Decarbing
Step 2: Washing
Step 3: Silting
Step 4: Winterize
Step 5: Distilling
Step 6: Collecting
Step 7: Filter
Step 8: Reduction

Thats the (kinda, sorta..) brief overview. Click the Documentation tab or 3 bar button at the top to navigate to the latest RSO 2.0 literature. You will find the User Guide .pdf, Shop Manual .pdf, and Equipment List needed for all these steps.