The Ultimate Solventless Rosin Pressing Resource

How To Properly Sieve Bubble Hash for Air Drying

Sieving bubble hash refers to the process of breaking down freshly-made ice water hash using a stainless steel kitchen sieve in preparation for air drying. Sieving is a simple and effective way to grind wet bubble hash into tiny pieces that can release moisture quickly and thoroughly while air drying. Evaporation of moisture is more efficient from small grains of bubble hash than it is from a large patty of hash, which has a tendency to trap moisture within the center of the globby mass.
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Why Is Micron Accuracy Important for Solventless Extractions?

Bubble wash bags, rosin filter bags, and dry sifting screens are various types of filters that allow extractors to mechanically separate pure, unblemished cannabis resin from the cannabis plant. It’s thanks to these nylon filters that we can collect high purity cannabis concentrates without the use of solvents. Solventless cannabis extracts exist in a variety of premium forms, including bubble hash, rosin, and dry sift. Thanks to quality bubble wash bags, rosin filter bags, and dry sifting screens
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Average Bubble Hash Yields from Ice Water Extraction

When it comes to hash yield as a percentage of total weight of your starting material, there is a significant difference between dry material and fresh frozen material. The amount of moisture in fresh frozen is much higher than the moisture in dried cannabis, which accounts for the variation in yield percentages between the two types of starting material. For Dried, Air-Cured Cannabis, 15-20% yield is a good target. For fresh frozen, look for 3-8%. The rule of thumb for calculating wet (fresh frozen) weight to dry (air cured) weight is 5:1. So if you get 4% wet, that’s equivalent to 20% dry.
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Equipment for Preparing Fresh Frozen Cannabis

The main benefit of using fresh frozen cannabis in the production of solventless hash is preservation. Specifically, preservation of the profuse amount of terpenes and flavonoids that exist in the cannabis plant while it’s alive. Harvested plants quickly deteriorate, and these valuable terpenes are lost as the plant’s metabolism halts and compounds within the trichomes begin to oxidize and degrade. Air drying can lead to around 40% loss of terpene content.
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How Long Should You Dry Bubble Hash?

Solventless extractors create bubble hash through a process called Ice Water Extraction, in which we mix cannabis flowers together with ice water in order to separate the small appendages called trichomes away from the plant material. These trichomes (and specifically the heads) contain all the therapeutic compounds that cannabis is known for, and they’re the main ingredients of bubble hash. The purest hash is composed almost exclusively of these trichome heads, with only trace amounts of other plant material.
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How To Wash Fresh Frozen Cannabis for Bubble Hash Guide

Fresh frozen cannabis refers to cannabis flowers and trim leaves that are frozen to subzero temperatures immediately after harvest. Extractors use fresh frozen cannabis as starting material in the production of bubble hash. This process is called Ice Water Extraction, which involves mixing cannabis together with ice water using either a hand paddle or a washing machine. This mixing together of ice water and cannabis causes cannabis trichomes to fall away from the material and float freely in an ice water and cannabis slurry.
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How To Use Static Tech To Clean Dry Sift

Dry sift is a type of solventless cannabis extract that’s made through a process of sifting dried cannabis material back and forth over a series of mesh screens. Sifting the cannabis causes trichomes to break free from the material and pass through the pores in the screens. Trichome heads contain the highest concentrations of cannabinoids and terpenes, which is why separating them from the rest of the plant is so desirable. The best dry sift hash is almost exclusively composed of trichome heads (approaching 99%).
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Can You Wash Trim Leaves for Bubble Hash?

As the cannabis concentrates market continues to place increasing value on solventless extracts like bubble hash and rosin, it’s not uncommon for growers to commit entire harvests to bubble hash production. All the flowers from the plant are used as starting material for Ice Water Extraction. Full melt bubble hash, the highest grade of hash that’s rated as 6-star, is a fantastic product to dab and normally doesn’t stray too far away from the circles of extractors who produce it. 3-4 star bubble hash
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Does Cannabis Help Prevent COVID?

A recent study suggests that certain molecules produced by the cannabis plant can prevent COVID-19 infection. Collectively referred to as cannabinoids, these molecules trigger a variety of responses in the body through interaction with our Endocannabinoid System, a network of receptors that runs from head to toe. Cannabinoids block COVID virus entry into cells according to a study published this week by researchers affiliated with Oregon State University.
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How To Air Dry Bubble Hash

Drying is an essential phase in the creation of high quality bubble hash. Bubble hash is made through a process called ice water extraction, in which extractors mix cannabis and ice water together causing trichomes to fall away from the cannabis material. Extractors then filter these trichomes through a series of screens known as bubble wash bags, in order to separate the full trichome heads from the starting material. The main determination of the quality of bubble hash is the overall quality of the cannabis starting material.
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What is Homogenization in Solventless Extracts?

Homogenization means combining different consistencies into one uniform consistency. In terms of cannabis concentrates, homogenization is creating a substance of the same texture throughout, as opposed to solid forms and liquid forms that exist together. For example, hash rosin often separates into solid crystalline structures surrounded by pools of liquid terpenes. Different methods can be used to combine these two distinct components of rosin into one uniform consistency.
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What Is Auto Flowering Cannabis?

Autoflowering cannabis is a form of cannabis that produces flowers based on the age of the plant rather than the amount of sunlight and darkness that the plant receives daily. While regular cannabis produces flowers only in response to a specific photocycle, autoflowering cannabis flowers in almost any amount of light. This offers advantages to growers. Cannabis cultivars have been traditionally recognized as either sativa, indica, or ruderalis. Sativas are native to tropical and equatorial regions of the earth, where climate is conducive to longer flowering periods. Indicas are native to mountainous regions like the Hindu Kush mountains where the flowering periods are shorter.
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Work Cube vs. No Work Cube for Washing Bubble Hash

A work cube is a type of work bag used for washing bubble hash. Work bags are made with 220 micron nylon filters and hold the cannabis material while it's mixed with ice water. Although work bags are traditionally in the same open bucket-like shape as the other wash bags in the set, work cubes are made with 90 degree edges and are closable with a zipper around the top. Work cubes are also constructed using only 220 micron mesh, so the entire container acts as a filter allowing trichomes to pass through, while the bulk of the cannabis material remains inside.
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The Endocannabinoid System and Cannabis

Humans have been using cannabis for thousands of years. The history of human experience has included cannabis for health and wellness and recreation. It’s been a love affair that’s not going away, and for good reason. In some ways, it seems that humans and the cannabis plant were made for each other. The active compounds in cannabis called cannabinoids fit like a hand in glove with a system of receptors in our bodies known as the Endocannabinoid System. So what exactly are cannabinoids? Cannabinoids are the naturally occurring compounds
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Top 5 Mistakes To Avoid When Dry Sifting

Dry sift, or sift for short, is a type of solventless cannabis concentrate that’s similar to bubble hash in quality and appearance. While bubble hash is made with water and a series of filter bags, dry sift is extracted without water. Dry sifting involves sieving cannabis flowers or trim leaves with a series of mesh screens. As the cannabis material is agitated over the top screen, trichomes fall away and get caught on the screens beneath. Various sizes of screens collect various grades of dry sift, with the highest grades being composed almost entirely of trichomes.
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Top 5 Rosin Pressing Plate Tips

A rosin press is the primary piece of equipment that extractors use to make rosin. There are multiple types of presses, but every press incorporates a set of rosin pressing plates which apply heat and pressure onto the cannabis starting material. The pressing plates can be installed onto a regular hydraulic shop press which provides the necessary pressure for extraction, and temperature is set through a digital heat controller. Heating rods are inserted into the center of the plates which heat the aluminum to the temperatures needed for pressing rosin.
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What's the Optimal Moisture Content for Pressing Flower Rosin?

The moisture content of cannabis flowers is an important factor to consider when sourcing the best starting material for pressing flower rosin. Either too much moisture or too little moisture will negatively impact the extraction. Using flowers with just the right moisture level is key to maximize both yield and overall quality. Relative humidity is a good indicator of the amount of moisture in flowers. How can we measure the relative humidity of cannabis flowers? The best way to measure relative humidity
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Benefits of Pressing Rosin at High Temp

Temperature is one of the key variables for extractors to control while pressing rosin. The type of starting material determines the best temperature to target, but there’s a range of temperatures that can deliver good results. Aiming for the higher end of that range is considered pressing rosin at higher temps, and it offers some advantages over pressing rosin at lower temperatures. Before we look at the benefits to pressing rosin at higher temperatures, let’s review the suggested temperature ranges for each type of starting material.
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Benefits of Pressing Rosin at Low Temp

Rosin is created through the application of heat and pressure onto starting material over the course of several minutes. These variables of time, temp, and pressure can be adjusted depending on the type of cannabis material pressed and the specific strain or cultivar of that material. Differences in these inputs also impact both yield and quality of rosin. A range of temperatures are suitable for pressing rosin. Pressing at the low end of the temperature range will yield different results than pressing at the higher end.
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How To Cold Cure Rosin

Cold curing is a type of post-production treatment that you can apply to your freshly-made rosin. It’s a simple process that doesn’t require much input or equipment to execute, the main ingredients being a few days and some patience. Although the name itself implies the need for cold temperatures, relatively speaking even normal room temperatures will do the trick. With a sealable glass jar, dab tool, and cool ambient temperatures, you can easily set up an environment for your rosin to benefit from a cold cure.
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How To Smoke Bubble Hash

Bubble hash is one of the most spectacular forms of cannabis and possibly the most coveted type of solventless extract. Bubble hash can be used to make edibles, pressed into rosin, or consumed by itself. It’s rare to find true 6-star bubble hash in dispensaries, because the best of the best doesn’t normally stray too far from the extractors who are skilled enough to produce it! While a 1 or 2-star hash is great for edibles, and a 3 or 4-star hash is good for pressing rosin, the premium product is normally smoked in its unmodified form.
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