Automated Pre-Roll Machine Closing Machine!


The Atomic Closer is the only compact and expandable modular automated pre-roll closing machine designed to incorporate the human touch for a true premium quality look and feel. Crowns joints – no twist allowed!

Works with 84mm, 98mm (incl. reefer), 109mm & Dog Walkers cones.

Atomic Closer Features

The Atomic Closer can crown 72 pre-rolls every 45 seconds. Pair it with the STM workflow package and you have a complete system that not even a fully automated machine can match in terms of user friendliness and production output.

72 Joins in 45 Seconds Fast!

Tamps and closes 72 pre-rolled joints every +/- 45 seconds up to a daily capacity of 41,000*.

Simple to Use. Easy to Clean.

The Atomic Closer joint closing machine is simple to use and quick & easy to clean in minutes.


Crown Fold Finish. No Twist Tie.

Tamps & Crown Folds Ends into a Consistent fold. No twist ties here.

Compatible with the #1 RocketBox.

Compatible with RocketBox, Mini-RocketBox and other pre-roll machines.*

HMI Full Touch Screen Control.

Control the full operation, emergency stop and reset function from the touch screen control.

Made in USA With 2-Year Warranty.

Durable stainless steel & aluminum construction with food grade materials. Made in the U.S.A.

Small Form. Huge Impact.

Boasting an ultra compact footprint, this one-of-a-kind joint auto joint closing system can operate on a tabletop in facilities of all sizes, eliminating the industry’s #1 pre-roll bottleneck.

Joints Closed Per Cycle

Joints Closed Per Hour (1 Tray)

Joints Closed Per Day (1 Tray)

Automated Pre-Roll Machine

A Faster, More Intelligent Auto Closer

Closing pre-rolls is time consuming and ultimately the most costly labor component of the pre-roll manufacturing process. The compact Atomic Closer automatic pre-roll closing machine reduces costs and increases production simultaneously especially when paired with other STM products such as the Revolution grinder and RocketBox pre-roll machines.

Capable of closing 72 pre-rolled joints in a blistering 45 seconds, the Atomic Closer is perfect for small to large facilities looking to scale and grow production and efficiencies.  Select your joint size on the touch screen control and press start. That’s it!

The Atomic Closer automated pre-roll machine crown folds finished joints to give it that hand-packed feel instead of a twist, resulting in a much more professional looking pre-rolled joint which burns evenly (no canoeing).

It is by far the easiest closing machine on the market to use with fast, consistent results and super simple to clean and maintain. 

Pre-Roll Solutions

Modular Turnkey Workflow for Companies of All Sizes

Atomic Closer Closed Joints

As with all of STM Canna’s machinery, the Atomic Closer can function independently, however, it is much more efficient as part of STM Canna’s complete workflow system from grind to close.

STM Canna has a complete pre-roll workflow system to maximize your operation from grinding to packing to weighing and closing.  STM Canna’s unique and proven workflow is easily scalable as your business grows.

When you invest with STM Canna you invest in your future as STM continues to innovate, improve and expand.

  • Grind.
  • Pack.
  • Weigh.
  • Close.

Click Here to Find Out Why the Atomic Closer is So Good!

STM Canna Pre-Roll Turnkey Systems

The Atomic Closer is the first and only compact modular auto pre-roll closing machine for companies of all sizes. It is one component in an expandable system and compliments other STM products such as the Revolution grinders, RocketBox pre-roll machines and LaunchPad weigher for a complete, customizable & scaleable workflow.

From Our Clients

STM Canna has hundreds of satisfied customers in 41 U.S. States and 7 countries.

“I am extremely happy with our experience with STM Canna.”

Pure Beauty


“This is the only cannabis grinder (Revolution) that’s good enough for the Ice Box Flat Farms pre-rolls.”

Ice Box Flat Farms


“The RocketBox sets the standard for pre-roll machines.”

Appalachian Growers

North Carolina

“Our efficiencies have increased, labor costs have gone down, and it makes a superior product all around.”

Budz Butter


* Depending on your workflow, machines, accessories and personnel, this will obviously vary. Each tray will close roughly 1440 per hour for a total of 11,520 per day with an optimize workflow. Adding more trays can double, triple or more output capacity.
* The Atomic Closer will work with other pre-roll machines such as the Knockbox, however, you have to use the proprietary STM 72-joint trays which only work in the auto closer.

Sign-Up for the Next Atomic Closer LIVE Demo on May 24th at 10:30am PDT
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