NAKED PRESS

What is the Naked Press?

The Naked Press is a revolutionary rosin press for hash that operates without bags or parchment paper collection. It utilizes clean, non-reactive 316 stainless steel and glass for all major contact points with the input and output material, providing true 5μm filtration, and secondary filtration of rosin or sauce to 0.2 μm. This new method increases yield, streamlines the process, and removes/can remove single-use consumables* (SEE EXPLANATION BELOW, WHAT IS "THE BIG LIE"), and when coupled with a centrifuge, can quickly produce a pure, solventless cannabinoid isolate. All contact surfaces are medical-grade and GMP compliant.

What is "The Big Lie"?

The Big Lie is the claim that this process will eliminate single-use consumables or entirely eliminate parchment paper.  The truth is that, often, the "bean counters" are focused solely on the bottom line.  Since time is money, it is likely cheaper to simply recycle "typical single-use" items rather than dedicating labor to cleaning and reusing them. In addition, while rosin doesn't contact parchment paper during the final press, eliminating it from the preparation stage is inefficient. Using it to transfer the hash is a step that saves time, and removing it only increases overall labor time and cost. Parchment paper is not used or needed for the actual press or collection.  

What is the processing capability?

A single operator could process 500-1000g of hash per hour, which includes weighing, loading, and pressing. Typical suggested pressure, temperature, and micron range presses can occur in 60-300 seconds. Load and unload times vary based on operator experience. Press time decreases with higher filtration open area (larger micron) and higher temperature. Press time increases with lower temperature/pressure settings and smaller micron filtration. 

How does the return to rosin compare to traditional bag pressing?

The Naked Press can achieve a 10% higher rosin return in a single press compared to multiple pressings of bags at different temperatures. Results vary depending on input material. The process should yield at least the same return to rosin as traditional double-bagged press yields. Most side-by-side comparisons of the same micron filtration show an increase in yield with The Naked Press versus traditional rosin-pressing techniques.

How do I prepare the pre-press for maxium extraction efficiency?

When evaluating extraction efficiency or comparing Naked Press yields with yields obtained using a traditional rosin press, several factors must be considered. Proper material preparation and uniform puck formation are particularly important because the Naked Press is designed around single-plane filtration.

Because filtration occurs through a single plane, the material must be distributed as evenly and consistently as possible throughout the pre-press mold. Uneven density, clumps, or areas of excessive thickness can create pockets within the compressed puck where oil accumulates instead of migrating efficiently toward and through the filter.

The objective is to produce a pre-pressed puck with uniform thickness and density across the entire filtration area.

Before loading the pre-press mold: the hash should be properly dried, the material should be free-flowing and readily separable. The user should break apart any visible clumps before loading, matherial shoul dbe distributeed evenly across the entire mold, avoiding creating thicker or more densely packed areas.

Properly conditioned hash should flow freely, similar to dry sand, when being distributed into the mold. Moisture/ condensation can cause clumping.  Temperature and humidity can significantly affect material handling.

Do not open cold or frozen hash immediately after removing it from the freezer when the surrounding air is warmer and/or more humid. If the material temperature is below the room's dew point, moisture from the surrounding air can condense on the hash.

This surface moisture can cause individual particles to adhere to one another, producing clumps and making uniform distribution within the pre-press mold difficult. Uneven distribution can subsequently create localized areas of greater density and increase the amount of oil retained within the spent puck.

Whenever possible, allow sealed containers to equilibrate sufficiently before opening so that condensation does not form on the material.

What is the recommended pre-press load?

The appropriate load depends on the quality, cleanliness, and physical characteristics of the starting material. The following ranges should be treated as operational starting points rather than absolute requirements:

Recommended Load for higher-quality hash: 50–60 g maximum.  Lower-quality hash 25–40 g.

Using less material is acceptable and may improve extraction efficiency when processing material that does not flow or compress uniformly.  Higher-quality hash generally permits greater loading because a larger proportion of the puck consists of resin-rich material. Lower-quality material generally benefits from reduced loading to maintain a thinner, more uniform puck and shorter oil migration path.

What are the operating pressure and yield comparisons to standard flat platen rosin presses?

Traditional flat-plate rosin presses are capable of generating material pressures reaching into the thousands of PSI. The Naked Press intentionally operates at substantially lower material pressures.

Depending on the Naked Press version and operating configuration, maximum material pressure is approximately 380–580 PSI.

The system is designed to achieve efficient recovery of the desired resin fraction within this pressure range rather than relying on extremely high compression forces.

Increasing pressure beyond the level necessary to mobilize and recover the resin does not necessarily produce a proportional increase in desirable extract. Higher pressure can also increase the mechanical expression of non-target material, including cuticular waxes, lipids, fine particulate matter, and other contaminants present in the starting material.  For this reason, total recovered mass should not be used as the sole measure of extraction efficiency.

How should I compare Naked Press and traditional press yields?

When conducting a side-by-side comparison, evaluate both yield and extract composition. At minimum, comparisons should consider: total recovered extract mass, cannabinoid concentration and total cannabinoid recovery, terpene concentration and total terpene recovery, residual cannabinoids remaining in the spent puck, wax and lipid content, and insoluble or particulate contamination.

For a more complete evaluation, the extracts can also be subjected to an appropriate analytical or winterization procedure to estimate differences in wax and lipid content.

A traditional press may occasionally produce a higher apparent mass yield while recovering a greater proportion of non-target material. Conversely, a slightly lower gross yield from the Naked Press may represent comparable recovery of cannabinoids and terpenes with a lower proportion of waxes, lipids, or particulate contamination.

Accordingly, Naked Press performance should be evaluated using recovery of the desired chemical fraction and purity of the resulting extract, not gross yield percentage alone.

What about the terpenes and other volatiles?

The Naked Press process is guaranteed to retain a higher volatile content than traditional rosin pressing techniques. The collection container (4-16 fluid ounce size options) is intended to utilize inert gas flow to help condense and protect the volatiles that are expelled from the trichomes.  In addition, the collection container can be sealed so no volatiles escape from collection.

What about oxidation of the rosin in the press?

The press has an option to purge with argon or nitrogen gas for an inert pressing environment, so oxidation can be minimized. Proper ventilation and operation in a vent hood are required to operate with inert gas.  

Do you have laboratory analysis showing the Naked Press is producing higher quality rosin than traditional pressing techniques?

Are you asking for a white paper that has great numbers on it, proving the Naked Press and Pressing Naked process is better than traditional pressing?  Anyone can provide non-peer reviewed scientific looking documents to back up their claims.  While we do not provide a peer-reviewed "white paper" to back our claims, we are willing to sign a legally binding contract to deliver the necessary hardware and operating parameters to reproduce the stated claims. The purity of the rosin has been demonstrated on social media platforms. For companies with an OCM license in New York State, material can be processed at a partner facility to allow for direct comparison with traditional methods and independent lab analysis.

What is the price of the Naked Press?

A single-unit heated press system with a manual pre-press start at $12,000 USD.

How do I implement the technology in my process?

To implement the technology, send an email to hashcru@gmail(dot)com Your email should include your company name, and contact information. Inquiries are processed in the order they are received. Due to the high volume of interest, response times may exceed one week. A home-use version with 25-micron filtration is planned for release, hopefully before we get GTA6...

How did the idea for the Naked Press come about?

First we need a history lesson...@asimnplebipedalobserver

The Evolution of Cannabis Rosin: From Forum Discovery to Global Mainstream

1. Ancient Roots: Hashish and Traditional Extraction Methods

Cannabis hashish has existed for centuries, its first mentions date back to 12th-century Cairo, calling out the “hashish-eaters” among the Nizari sect (later labeled the Assassins). Traditional methods, such as hand-rubbing, dry-sifting, and ice-water “bubble hash” were long-standing techniques to separate potent trichomes from plant matter. These mechanical processes laid the groundwork for later, solventless innovations like rosin.

2. The Forum Genesis: Comphashon Coining “Rosin” (circa February 2006)

Online hash communities played a critical role in modern rosin’s birth. Around February 2006, IC-Mag forum member Comphashon (Chadwick Bastardo) posted a rudimentary extraction method, using heated stainless steel spoons and bowls to separate cannabis oils from hash without solvents. He dubbed this discovery “Rosin”, inspired by the violin bow rosin he observed from his then-girlfriend’s violin and rosin bag

“Comphashon first came across this weird substance on the side of his double boiler… inspired by his then girlfriend… she had a violin and a rosin bag…” (@Greatgardener)

3. The Rosin Tech Revolution: Phil “Soilgrown” Salazar (Early 2015)

Nearly a decade later, in early 2015, Phil “Soilgrown” Salazar (aka Soilgrown Solventless) reimagined the rosin technique using a common household item: the hair straightener. Working initially with lower-grade bubble hash, Salazar noticed that when pressed under heat and pressure, oil would separate and become dabbable. Upon realizing the potential, he began pressing whole cannabis flowers, birthing what we now know as flower rosin.

By March 15, 2015, Salazar shared his method on Hash Church #25, soon others furthered the rosin technique with innovations like screen filters (e.g., tea bag tech, drip tech).  This period marks a pivotal shift—from a niche forum trick to a replicable, accessible, and widely adopted extraction method.

4. Rosin Today: Mainstream Acceptance and Refinement

Flower rosin and hash rosin are now widely recognized forms of solventless cannabis extracts made simply by applying heat and pressure to flower, kief, or hash. The method preserves terpenes and cannabinoids, offering a clean, flavorful product without using solvents.

In modern production, rosin is often created using hydraulic or pneumatic presses with precise temperature and pressure control, expanding far beyond hair straighteners into industrial-scale operations, and now we have the Naked Press that processes material in an inert/oxygen free environment, does not use nylon bags, parchment paper, or mesh wrapped hash. Variations now include “live rosin” made from fresh-frozen plant material, and post-press textures like badder, jam, various trade marked textures, and whipped rosin. Many dispensaries now stock rosin products, and competitive events celebrate the craft’s refinement and popularity. The technique’s rise reflects both consumer preference for cleaner extracts and broader cultural acceptance of cannabis concentrates 

The story of rosin is one of grassroots innovation, born from a desire for solventless purity. It began with an ad-hoc experiment on a double boiler in 2006 by Comphashon and evolved into Soilgrown's elegant hair-straightener breakthrough nearly a decade later. This creative problem-solving led many to seek a nylon and parchment-free method for producing rosin.

Traditional rosin production involves numerous touch points that can introduce contamination. Recognizing this, I saw a need for a new process and hardware design that could reduce these risks. By adapting a device from another industry, I developed a solution that allows rosin to be produced in an inert environment, with only stainless steel and glass contact surfaces.