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make ice hash

Ice hash is a fairly versatile concentrate. There are several different ways to use ice hash, though some are generally preferred over others. Different methods of use may also suit different needs. Some users may prefer a sprinkle of ice hash over their bowl for an extra potency boost, while others may prefer to dab with ice hash for the full effect.
Once your stir time is completed, lift the top bag with the plant material and strain the liquid into the bucket until only ice and flower are left in the first bag. As you repeat the strain through successive bags, observe the traits of what’s left on the screen. Depending on your needs, various micron filters offer different melt levels. Bubble bags between 73 and 90 microns are assumed to produce the finest resin. To collect the remaining concentrate, turn each bag inside out after draining.
Fullmelt ice hash is the highest grade. It completely melts into a puddle, or oil, if it’s a 6-star hash. A 4-star halfmelt hash can technically be turned into a “true fullmelt.” A fullmelt ice hash is great for dabbing, and typically produced with 70-120 micron sieves. According to Bubbleman, “A fullmelt experience will start by watching solid microencapsulated glandular trichome heads liquefy as you heat them up into a golden oil that boils and bubbles and dances around your dish or screen.”
The final step is to press all excess moisture out of your hash. Drying is arguably the most important factor in ensuring the quality of your final product. Gently press the excess moisture out of your ice hash and then use a butter knife, or razor blade, to break it down into small pieces. If you do not have access to a freeze dryer, the smaller pieces will make it easier for the hash to dry out.
That’s where micron sizes come in-the openings in a filter screen through which material moves are measured in microns. Using screens of varying micron sizes is how hash makers capture the trichome heads and separate them from the rest of the plant.
Ice hash is one of the most potent, powerful concentrates you can make without solvents. The needed materials are minimal; a set of at least 5 bubble bags (silkscreen bags or filters of varying micron sizes), a bucket, fresh frozen or cured flower, and a large spoon or stirring tool. Fresh frozen flower is generally preferred for making ice hash, because the frozen trichome heads break off the stem and rest of the plant more easily. The ice hash-making process can be divided into the following steps:
Trichomes range from 20-125 microns. Filter screens or bags designed to make bubble hash are made to correspond with the bags of varying micron sizes that are used to make bubble hash. If a concentrate has the micron listed on the package, this number indicates the micron size of the bag used for that particular fraction of water hash.
Throughout the ’90s, Bubbleman was active in medical cannabis advocacy, cannabis macro photography, and the development of cannabis extraction and decontamination. He popularized the water extraction method with the first multi-bag filtration kit in 1999 — designing three bags that would filter glandular trichome heads for the sake of, in Bubbleman’s own words, “harm reduction, finding the best way to deliver cannabinoids, and exploring the limits of pot purity .”
It’s also important to remember that trichomes don’t always conform to micron screen sizes. In fact, trichome sizes are cultivar-dependent. Some cultivars will produce thicker trichome heads, while others will have small heads. Plant maturity will also affect the size. However, the right combination of filter screens and micron sizes can reliably produce quality hash. Most water hash equipment consists of several filtration bags of varying micron sizes.
A cannabis concentrate formed by sifting the trichomes of the cannabis plant in the presence of ice water. Ice hash, (commonly referred to as ice water hash, bubble hash, or wet sift) is typically dabbed, but can also be used to add potency to flower.