Prerolls

Tutorial

GPC

Pack Perfect Prerolls with the GPC Centrifuge System

Aug 5, 2025

If you recently acquired a GPC preroll packing centrifuge system, or are currently in the market for one, this article is a great resource to learn how to maximize production efficiency with the #1 preroll system on the market today. 

About the GPC

Short for “Gravity Packing Centrifuge”, the GPC preroll packing system is the first of its kind, utilizing precision controlled centrifugal force to pack the most consistent high-quality prerolls at scale. This system is the “OG” of preroll centrifuge machines, meticulously designed and built from the ground up to not only be extremely efficient, but extremely durable and reliable as well. Every aspect of preroll production was studied in order to build a machine that takes every step into consideration to streamline the packing process, maximizing consistency, and reducing or in some cases even eliminating the possibility of defects or product loss. 

Major benefits of the GPC

Ease of Use:

The GPC system is incredibly easy to operate. Its compact plug and play design makes it possible to operate in a small room by a single operator, thus not requiring any expansion of facilities. 

Precision Density Control:

By utilizing centrifugal force, the operator has the ability to customize the packing speed and time based on the varying density of the flower. Because each strain could have differing volumes, density, and moisture levels, it’s crucial to be able to account for these variables if you want to achieve the perfect flawless pack each time. There is no other system that provides this level of control and precision, making it the ultimate system that your customers will love. 

Reliable, Durable Design:

Most preroll packing systems are designed too complex, with thousands of pieces and moving parts which are prone to breaking. However, the GPC was designed specifically for durability and reliability with one function: spin to pack. Because of this simple and effective design, the GPC is a system you can count on that is easy to maintain for years. 

Quiet Operation:

While most preroll packing systems are extremely loud, due to the moving parts and constant vibrating or shaking, the GPC’s centrifuge spins quietly which creates a much safer working environment. By keeping the operation decibels lower, operators have no need to wear any ear protection while on the job.  

Scalability:

Simply put, there is no other preroll packing system that has the ability to scale and increase production volume quite like the GPC. This system packs on average up to 396 cones in a 60 second cycle. While the system only requires a single operator, it’s unique streamlined standard operating process makes it easy to pack cones as quickly as you can swap out the centrifuge pods. Therefore, just by additional system operators your business could be packing as many as 50,000 prerolls per day without having to purchase additional units. 

Preroll Quality:

Every preroll packed by this system has proven to be the highest quality pack that can be achieved. Due to the precision density control, and the scientifically proven method of packing by centrifuge, each cone is packed perfectly with zero air pockets or defects. Simply put, no other preroll packing system has the ability to pack prerolls at this quality level, and consistently. Customers will enjoy prerolls that don’t end up canoeing and that burn all the way to the crutch.  

How does the GPC work?

The GPC preroll centrifuge system utilizes a simple operation process that involves these particular steps:

  1. Drop Cones into Pods:
    The GPC can hold up to 6 pods at a time, each pod containing holes for 66 cones. 

  2. Fill Cones with Flower:
    Using a predetermined weight template that fits directly over each pod of cones, operators can easily fill each cone with the exact weight of flower simply by pouring the flower on top and spreading it evenly across each hole. 

  3. Attach Pods to GPC Centrifuge:
    After filling the pods with flower, they are ready to be attached to the centrifuge with a simple locking pin. While the system can pack up to 6 pods at a time, operators have the ability to pack combinations of 2, 3, 4 or 6 pods at a time maintaining that there is equal weight distribution for the centrifuge to operate smoothly. 

  4. Run the Packing Cycle:
    In most cases, the packing spin cycle only takes about 60 seconds (it could be shorter, or longer depending on your selected spin time settings). After the spin cycle is complete, your prerolls will be ready for extraction. 

  5. Extracting Packed Cones:
    Because the GPC packs prerolls so well (literally the best!), you can easily extract the cones from each pod with virtually no product loss and limited touchpoints therefore maintaining the integrity of the cone without causing defects. Using the GPC extraction tools, every packed cone can be easily dumped out on a table and sorted by the operator. 

How does the GPC achieve perfect preroll weight consistency?

In our step by step summary above, we mentioned the use of a predetermined weight template that makes it easy to rapid fill pods with flower while achieving the perfect desired weight for each cone. This predetermined weight template is a patented design and process that only needs to be configured once per strain, or once per day at the beginning of the operator shift. Once the template is configured, it can be used just like a “cookie-cutter” without having to reweigh the flower over and over with each packing cycle. 

This patented cookie-cutter weight template consists of multiple layers that fit directly above the centrifuge pods. Each layer is just a thin plate with holes that line up directly over each cone. By stacking multiple plates together, operators can easily determine how many stacked plates are required to achieve the exact weight for each cone simply by filling one single hole with the desired weight and seeing how many layers are needed to fill to the top. 

Therefore, once the operator determines the necessary number of plates for their desired weight, the newly configured stack (or template) can be placed on top of each pod for rapid filling. 

Watch this video to learn about the Layer Cake Weight Template process:

How do you attach pods to the centrifuge?

Once a pod is filled with flower using the weight template as described above, each pod can easily be attached to one of the 6 centrifuge arms using a simple locking pin. 

Remember, when attaching pods to the centrifuge, it is important to attach in combinations of 2, 3, 4 or 6 pods to maintain equal weight distribution. This ensures the centrifuge will operate smoothly.

Once each pod is attached securely to one of the centrifuge arms, the operator may now close the GPC lid and press the start button to begin the packing cycle. 

Watch this video to see how easy it is to attach pods to the GPC:

Maximize Production Efficiency Tips:

TIP 1: If you are aiming to increase production volume and efficiency, multiple operators can be working with the same system. While one operator operates the GPC system (attaching pods, running spin cycles, and removing pods), another operator can be focused on prepping pods, and a third operator can be focused on cone extraction. With this simple standard process, your GPC can virtually be running almost nonstop running packing cycles back to back with ready-to-go pods always on deck. Always keep in mind, because the GPC packs prerolls so rapidly, it’s almost impossible to ever outpace the machine! 

For a full 1-on-1 walk through with one of our GPC operator experts, please contact your account representative with CannaTechSupply today and set up a virtual call to review. Training is very easy, and initial operator training is provided free for all new GPC purchases.



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© 2025 CANNATECHSUPPLY.COM