1. Introduction
Thank you for choosing the ATOMSTACK A6 Ultra 6W Laser Engraver. This manual provides essential information for the safe and effective operation, setup, and maintenance of your device. Please read this manual thoroughly before using the product to ensure optimal performance and safety. The ATOMSTACK A6 Ultra is a high-precision laser engraving and cutting machine designed for various materials, featuring a 6W optical laser output and a unibody frame for ease of use.
2. Safety Information
Operating a laser engraver involves potential risks. Adhere to all safety guidelines to prevent injury or damage to the equipment.
2.1 General Safety Precautions
- Eye Protection: Always wear appropriate laser safety goggles when the laser is operating. The device includes a protective shield, but additional eye protection is recommended.
- Ventilation: Operate the engraver in a well-ventilated area to dissipate fumes and smoke produced during engraving and cutting.
- Fire Hazard: Laser engraving can ignite flammable materials. Keep a fire extinguisher nearby and never leave the machine unattended during operation.
- Material Compatibility: Only engrave or cut materials specified as safe for laser processing. Avoid materials that produce toxic fumes or are highly reflective.
- Children and Pets: Keep children and pets away from the laser engraver at all times. The protective cover helps prevent accidental exposure to the laser point.
- Emergency Stop: Familiarize yourself with the location and operation of the emergency stop button.
- Power Supply: Use only the provided power adapter. Ensure the power supply meets the specified voltage requirements.
2.2 Integrated Safety Features
- Laser Protective Cover: The device is equipped with an orange protective cover that filters laser light, reducing the need for additional eyewear for observers and preventing pets from seeing the laser spot.
- Auto Laser Shut-off: The enclosure features two interlocks that automatically shut off the laser when the cover is opened during operation.
- Limit Switches: Four-direction limit switches provide enhanced safety by defining the operational boundaries of the laser module.
- Position Movement Protection & Fire Detection: The system includes features to detect abnormal movement and potential fire hazards, enhancing operational safety.

Figure 2.1: A visual representation of the ATOMSTACK A6 Pro's comprehensive safety features, including mechanisms for position movement protection, fire detection, double-layer eye protection, automatic laser shut-off when the cover is open, and four-direction limit switches for enhanced operational safety.
3. Package Contents
Verify that all items are present in your package:
- 1 x ATOMSTACK A6 Ultra Laser Engraving Machine
- 1 x B3 Dust Cover
- 1 x H2 Base Kit
- 1 x Power Adapter (100-240V AC, 50/60HZ input; 24V 5A output)
- 1 x USB Cable
- 1 x User Manual (this document)
- Necessary assembly tools and accessories (e.g., screws, wrenches)
4. Specifications
| Feature | Specification |
|---|---|
| Brand | ATOMSTACK |
| Model | A6 Ultra (A6 Pro) |
| Engraving Size | 365 x 305 mm |
| Total Machine Power | 50W |
| Optical Laser Output Power | 5-6W |
| Laser Wavelength | 455 ± 5 nm |
| Laser Spot | 0.05 x 0.05 mm |
| Focusing Mode | Fixed focus laser (no focusing required) |
| Operating Software | LaserGRBL, LightBurn |
| Supported Operating Systems | Windows, Linux, macOS |
| Supported File Formats | JPG, JPEG, SVG, PNG, BMP, PDF, G-Code, DXF |
| Data Transfer Method | USB, APP |
| Power Input | 100-240V AC, 50/60HZ |
| Power Output | 24V 5A |
| Certifications | CE, FCC, RoHS, FDA, PSE |
| Product Dimensions (L x W x H) | 60 x 17 x 60 cm |
| Product Weight | 7.5 kg |
| Model Number | T-A6UH2 |
5. Setup
The ATOMSTACK A6 Ultra features a unibody frame design, significantly simplifying the setup process. Most components are pre-assembled, allowing for quick deployment.
5.1 Initial Assembly
- Unpack: Carefully remove all components from the packaging.
- Positioning: Place the engraver on a stable, level surface in a well-ventilated area.
- Connect Power: Plug the power adapter into the engraver and then into a suitable power outlet.
- Connect to Computer (Optional): If using a computer for control, connect the engraver to your computer via the provided USB cable.
- Install Software: Install the recommended operating software (LaserGRBL or LightBurn) on your computer. Refer to the software's documentation for installation instructions.

Figure 5.1: A user setting up the ATOMSTACK A6 Pro laser engraver, highlighting its unibody frame design that requires no complex installation, allowing for immediate use after unboxing.

Figure 5.2: The ATOMSTACK A6 Pro laser engraver featuring its integrated camera for precise positioning, alongside a screenshot of the LightBurn software interface demonstrating its use.
6. Operating Instructions
This section outlines the basic steps for operating your ATOMSTACK A6 Ultra laser engraver.
6.1 Preparing for Engraving/Cutting
- Power On: Turn on the main power switch of the engraver.
- Software Launch: Open LaserGRBL or LightBurn software on your computer.
- Material Placement: Place the material to be engraved or cut onto the working bed. Ensure it is flat and securely positioned.
- Focusing: The A6 Ultra features a fixed-focus laser, eliminating the need for manual focusing.
- Design Import: Import your design file (JPG, JPEG, SVG, PNG, BMP, PDF, G-Code, DXF) into the software.
- Parameter Settings: Adjust laser power, speed, and passes according to the material type and desired effect. Refer to material testing guides for optimal settings.
- Positioning: Use the software's positioning features, potentially utilizing the built-in camera for precise alignment of your design on the material.
6.2 Starting Operation
- Safety Check: Ensure all safety precautions are in place, including wearing safety goggles and confirming proper ventilation.
- Start Job: Initiate the engraving or cutting process from the software.
- Monitoring: Continuously monitor the machine during operation. Be prepared to use the emergency stop if any issues arise.
- Completion: Once the job is complete, the laser will stop. Wait for any smoke or fumes to clear before opening the protective cover and removing the material.
6.3 Material Compatibility
The ATOMSTACK A6 Ultra is compatible with a wide range of materials for engraving and cutting:
- Wood (Basswood, Pine wood, Paulownia, Bamboo)
- Acrylic
- Leather
- Paper, Cardboard
- Fabric
- Some plastics (ensure they do not produce toxic fumes)
Always perform small test engravings on new materials to determine optimal settings and ensure safe processing.

Figure 6.1: An image showcasing the ATOMSTACK A6 Pro laser engraver's versatility in processing different materials, including basswood, acrylic, pine wood, paulownia, bamboo, and leather, suitable for both cutting and engraving.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your laser engraver.
- Cleaning the Lens: Periodically clean the laser lens with a specialized lens cleaning solution and a lint-free cloth. A dirty lens can reduce laser power and engraving quality.
- Cleaning the Engraving Bed: Remove debris and dust from the engraving bed after each use. A clean bed helps maintain consistent engraving results.
- Lubrication: Check the guide rails and moving parts for smooth operation. Lubricate as needed with appropriate lubricants to prevent friction and wear.
- Firmware Updates: Check the ATOMSTACK official website for any available firmware updates for your device to ensure you have the latest features and bug fixes.
- Protective Cover: Keep the B3 Dust Cover clean to maintain visibility and ensure its protective properties. The integrated 7500RPM fan helps with efficient ventilation and dust removal.

Figure 7.1: The ATOMSTACK A6 Pro laser engraver enclosed within its protective cover, illustrating benefits such as noise reduction, fire resistance, efficient ventilation, and dust protection for a safer and cleaner engraving experience.
8. Troubleshooting
This section addresses common issues you might encounter and provides potential solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Laser not firing | Power not connected; Emergency stop engaged; Software error; Protective cover open. | Check power connections; Release emergency stop; Restart software/computer; Ensure protective cover is fully closed. |
| Poor engraving quality | Incorrect laser settings (power/speed); Dirty lens; Material not flat; Incorrect focus (though A6 Ultra is fixed focus, ensure material is at correct height). | Adjust laser power/speed in software; Clean laser lens; Ensure material is flat; Verify material height. |
| Machine not connecting to computer | USB cable issue; Driver not installed; Software not recognizing device. | Try a different USB port/cable; Install necessary drivers; Restart software/computer; Check device manager for recognition. |
| Unexpected movement or stopping | Loose cables; Obstruction on rails; Software command error; Limit switch triggered. | Check all cable connections; Clear any obstructions; Restart job; Inspect limit switches for damage or obstruction. |
9. Warranty and Support
For warranty information, please refer to the documentation provided at the time of purchase or contact your retailer. ATOMSTACK products typically come with a manufacturer's warranty covering defects in materials and workmanship.
For technical support, troubleshooting assistance beyond this manual, or inquiries about spare parts, please contact ATOMSTACK customer service through their official website or the contact information provided with your product. When contacting support, please have your model number (A6 Ultra / T-A6UH2) and purchase details ready.





