The Ultimate Solventless Rosin Pressing Resource

Equipment Roadmap for Building Out Your Hash Lab

One of the mistakes we’ve seen new hash makers make is overextending themselves trying to go from zero to full scale production overnight. We’ve seen passionate solventless enthusiasts dropping thousands on freeze dryers before they've even figured out how to properly collect resin from a bubble bag. Do you really need a freeze dryer to start? Nope. Not even close. This guide breaks down five levels of hash lab setups with clear priorities for each phase so you can spend smart, scale wisely, and make fire hash at any stage.
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Breaking Down Nanoemulsification in Cannabis and Why It Matters

When you shake up a cannabis beverage and take a sip, it starts out tasting great. But by the time you get to the bottom of the bottle, you're dealing with a layer of separation that looks like a science experiment gone wrong. Oil and water don't mix, and that's especially true for cannabinoids. This is where nanoemulsification comes in, completely setting the stage for infused beverages and water-based edibles to gain the traction they’ve had in recent years.
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Top Cannabis Cultivars for Ice Water Hash Extraction in 2025

Cultivar selection is crucial when you're planning for ice water hash production. You can have the most dialed technique in the world, but if you're starting with genetics that don't wash well, you're fighting an uphill battle. The best hash makers know that success begins in the garden, with plants that are specifically chosen for their resin production, trichome structure, and overall suitability for solventless extraction.
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What Makes THC-V Different?

If you've been keeping up with cannabis research lately, you've probably started hearing about THC-V. While THC and CBD have dominated conversations for years, this lesser-known cannabinoid is quietly making waves in both research labs and dispensaries. What makes THC-V particularly interesting isn't just what it does, it's how differently it behaves compared to the cannabinoids we already know and love.
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How To Measure Your Garden's Ice Water Hash Production the Right Way

For years, most people have been using the traditional percentage approach "we hit 7.5% to bubble" where you divide the weight of your final hash by the weight of your fresh frozen input. While this metric has been the standard, it's actually pretty misleading and doesn't tell you what you really need to know about your garden's performance.
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Understanding Terpene Loss in Ice Water Hash

If you've ever wondered why the water in your ice water hash mixing vessel has a sheen of oil on the surface, you're asking the right questions. Solventless extraction methods like ice water hash and dry sifting are celebrated for their purity and lack of chemical residues, but they each come with their own trade-offs when it comes to preserving those precious terpenes that make our hash sing.
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Is There Pesticide in Your Dispensary Vapes?

We're not talking about black market products here. This is happening in licensed dispensaries, with products that carry official lab test results and state compliance stickers. The growing concerns around pesticide contamination aren't just fear-mongering. They're backed by data that should have everyone in this industry asking tough questions about how we're protecting consumers.
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Finding the Ideal Temperature for Your Hash Lab

Drop that temperature down, and suddenly your resin starts behaving like the well-mannered extract it's supposed to be. Cooler conditions help those trichome heads maintain their structure, leading to better separation during washing and way less material loss throughout the process. You'll notice cleaner screens, easier collection, and hash that looks more like what you see on Instagram.
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The Press Club X Terp Warz Seattle 2025

Think of Terp Warz as the Olympics of solventless cannabis, but way more fun and with a lot more good vibes. At its core, this event exists to celebrate and elevate solventless cannabis culture in all its forms. We're talking about a competition where the most skilled extractors from across the region bring their absolute best work, their cleanest bubble hash, their most luscious rosin, and their most innovative techniques.
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Solventless Collaboration Rooted in Education and Art with Box Brown

Every July 10th, the solventless community comes together to celebrate 710, our unofficial holiday honoring hash, rosin, and everything that makes the art of extraction so special. For years, The Press Club has marked this occasion by creating something meaningful for our community, whether through educational content, product innovations, or special releases that capture the spirit of what we do. This year, we're stoked to announce our most exciting 710 collaboration yet: a limited-edition sticker
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Vapor Pressure Deficit VPN Drying Rooms for Solventless Extractions

Fresh frozen material is widely accepted as the ideal preparation for solventless processing, but what if traditional air drying and curing is the better option for your operation? While proper drying and curing techniques are important for all cannabis applications, they become absolutely crucial when your end goal is solventless extraction. The delicate trichome structures that will eventually become your precious hash are most vulnerable during this transition period
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Homegrown Hashishan Podcast Getting Started with Pressing Flower Rosin with CannaPlates

We're excited to share this conversation with Cannaplates from a recent episode of the Homegrown Hashishan Podcast here on our blog. Thanks to the team at Homegrown Hashishan for making it happen! Hosted by Sonoma Sungrown and Don't Worry Be Hashy, this episode has everything you need with Cannaplates to press flower rosin. Plus, some fun stories about the early days of pressing rosin with a hair straightener.
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How To Properly Harvest & Trim Your Buds for Washing To Reduce Chlorophyll

While flower growers focus on bag appeal, trimming aesthetics, and curing perfection, hash makers aim for trichome preservation and contamination prevention from the very first cut. This shift in approach begins at harvest and continues through every step of material preparation, ultimately determining whether your wash water runs clear and produces pristine, white hash or becomes contaminated with chlorophyll that creates green-tinted, harsh-tasting final products.
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Fermented Nutrients For Hash Production

The cannabis industry's evolution toward organic cultivation and sustainable farming practices has created opportunities for cultivators and processors to think not just about improving quality, but being more environmentally responsible. This is especially true for hash makers. While synthetic nutrients can certainly grow good cannabis, there's a recognition among serious cultivators that the path to truly exceptional hash begins with building healthy, living soil ecosystems.
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Listening to Your Resin & Bubble Hash

Picture a master chef in their element. Inside of a beautiful kitchen, they are tasting a sauce for seasoning balance, feeling the texture of pasta between their fingers to test doneness, watching the color change as onions caramelize, inhaling the aromatic steam rising from a perfectly timed sear. They are totally focused, immersed, and one with the food. Professional chefs understand that exceptional cuisine emerges from engaging all five senses throughout the cooking process.
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How to Clean Dirty Rosin Bags

Rosin bags are a staple piece of gear in solventless extraction, serving as the critical filtration barrier between the precious resin and the unwanted material during the pressing process. These specialized mesh filters bags maintain the purity that sets premium solventless extracts apart from other types of cannabis products. Yet here's a dirty little secret that many extractors discover too late: even brand-new rosin bags can introduce contaminants into your hash
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Why You Should Keep Your Hash Collection Spoon Soaking in Ice Cold Water

Success in making hash lies in the details. Every step matters, from the quality of your starting material to the final collection technique. While most hash makers focus on more glamorous aspects of ice water extraction, like water temperature and agitation methods, many overlook a simple but critical practice. What best practice are we talking about? It's keeping their hash collection spoon submerged in ice cold water
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Introducing The Press Club’s Hash Collection Spoon

The difference between good hash and exceptional hash comes down to the details. Every step matters—from selecting premium starting material to the meticulous collection of those resin-rich trichomes. Components of ice water extraction that normally get all the attention include wash vessels and filter bags, but the humble tool used to gather those resinous treasures from the final collection screen is frequently overlooked.
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Always Keep Your Wash Bags Submerged In Cold Water

Bubble wash bags are the cornerstone of ice water extraction, functioning as micron-specific filters that separate trichome heads based on their size. Typically arranged in a descending sequence from 220 microns down to 25 microns, each bag captures different components of the plant material—from large contaminants to the prized full-spectrum heads and finally the smallest, purest trichomes.
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Hash Vac 101: The New Dry Sift Technique & How To Make It At Home

Dry sift is one of the three pillars of solventless cannabis extraction alongside bubble hash and rosin. This ancient collection method harnesses the simple principle of mechanical separation to harvest trichome heads from cannabis material without using water, heat, or pressure. At its core, dry sift represents cannabis extraction in its purest form—just gravity, friction, and fine screens working together to isolate the resin glands that contain the plant's most prized compounds.
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BCBubbleMan's Hash Church x The Press Club Official Collaboration

Few platforms have brought cannabis icons together around solventless concentrates like Hash Church, the long-running YouTube series hosted by Marcus “Bubbleman” Richardson. More than just a talk show, Hash Church is a gathering place, a digital roundtable where some of the most respected voices in cannabis extraction, cultivation, science, and activism come together to share insights, stories, and expertise.
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