NEJE Master 2
NEJE Master 2 Mini Engraving Machine User Manual
Model: Master 2
1. Introduction
This manual provides essential information for the safe and efficient operation of your NEJE Master 2 Mini Engraving Machine. Please read this manual thoroughly before using the device and retain it for future reference.
2. Safety Precautions
Operating a laser engraving machine requires adherence to strict safety guidelines to prevent injury and damage. Always prioritize safety.
- Wear Protective Eyewear: Always wear the provided laser safety goggles during operation to protect your eyes from laser radiation.
- Ventilation: Ensure adequate ventilation in your workspace to dissipate fumes and smoke produced during engraving.
- Fire Safety: Keep a fire extinguisher or water nearby. Do not leave the machine unattended during operation, especially when engraving flammable materials.
- Material Compatibility: Only engrave materials specified as safe for laser engraving. Avoid highly reflective, transparent, or unknown materials.
- Children and Pets: Keep children and pets away from the operating area.
- Stable Surface: Place the machine on a stable, level, and non-flammable surface.
- Emergency Stop: Familiarize yourself with the location of the power switch for immediate shutdown in an emergency.

Image: The NEJE Master 2 Mini Engraving Machine showing safety warning labels on its base, including symbols for laser radiation, eye protection, and avoiding touching the laser.
3. Package Contents
Verify that all items listed below are present in your package:
- 1 x NEJE Master 2 MINI Engraving Machine
- 1 x 2.5W Output Engraving Module
- 1 x 12V 2A Power Adapter
- 1 x Laser Safety Glasses
- 1 x Data Cable (USB)
- 1 x User Manual
- Assorted Test Materials (e.g., small wood pieces, cardboard)

Image: A complete view of the NEJE Master 2 Mini Engraving Machine and its accessories, including the main unit, laser module, power adapter, USB cable, safety glasses, and sample materials.
4. Setup Guide
4.1. Initial Assembly and Connection
The NEJE Master 2 Mini comes largely pre-assembled. Follow these steps to prepare it for use:
- Place the Machine: Position the engraving machine on a stable, flat surface.
- Connect Laser Module: Ensure the laser module is securely attached to the gantry.
- Connect Power: Plug the 12V 2A power adapter into the machine and then into a power outlet.
- Connect to Computer: Use the provided USB data cable to connect the machine to your computer.
4.2. Software Installation and Connection
The NEJE Master 2 Mini can be controlled via NEJE software on a computer (Windows/Mac) or through a mobile application (Android/iOS).
- For PC Software:
- Visit the official NEJE Wiki website (wiki.nejetool.com) to download the latest NEJE Win Software and necessary drivers.
- Install the software and drivers on your computer.
- Launch the NEJE software. The machine should automatically connect. Verify the model and firmware version displayed in the software.
- For Mobile App Control:
- Download the NEJE app from your device's app store (Android/iOS).
- Ensure Bluetooth is enabled on your mobile device.
- Open the NEJE app and follow the on-screen instructions to connect to your engraving machine.
Video: This video demonstrates the unboxing, assembly, and initial connection process for the NEJE Master 2 Mini Engraving Machine, including connecting to a computer and using the NEJE software for engraving. It also shows mobile app connectivity.
4.3. Focusing the Laser
Proper laser focus is crucial for optimal engraving and cutting results. The NEJE Master 2 Mini features an easy-focus design.
- Place your material directly under the laser module.
- Adjust the focus knob on the laser module until the laser spot on the material is at its smallest and sharpest point. This typically results in the best engraving quality.

Image: A hand adjusting the focus knob on the laser module to achieve a precise, small laser spot on the material for engraving.
5. Operating Instructions
5.1. Basic Engraving Process (Software/App)
Once connected and focused, you can begin engraving:
- Load Design: In the NEJE software or app, import or create your desired image or text.
- Adjust Settings: Set engraving parameters such as laser power, burning time (speed), and image size. Refer to the software interface for specific options.
- Preview Area: Use the preview function to ensure the engraving area aligns correctly with your material. Adjust the machine's position if necessary.
- Start Engraving: Initiate the engraving process. Monitor the machine closely during operation.

Image: The NEJE Master 2 Mini Engraving Machine in operation, controlled wirelessly via a smartphone application, demonstrating its ease of use for engraving designs onto materials like wood.
5.2. Material Compatibility
The NEJE Master 2 Mini is suitable for engraving and cutting a variety of materials. Always test on a scrap piece first to determine optimal settings.
| Category | Examples |
|---|---|
| Wood & Wood Products | Plywood, Unfinished Wood, Solid Wood, Veneer, Bamboo, MDF board, Corrugated board |
| Paper & Cardboard | Kraft paper, Cardboard |
| Plastics & Acrylics | Plastic, Black acrylic, Film-coated transparent acrylic |
| Leather & Fabric | Leather, Canvas art, Non-woven fabric |
| Metals (Coated/Anodized) | Black anodized aluminum, Painted metal, Film-coated stainless steel |
| Other | Stamp rubber, Bone, Painted tile, Film-coated glass |
Note: For glass, transparent acrylic, and stainless steel, a coating or paint may be required for engraving.

Image: A visual representation of various materials that can be engraved or cut by the NEJE Master 2 Mini, including different types of wood, leather, plastic, and coated metals.
5.3. Advanced Features
- Offline G-code Vertical Engraving: The machine supports offline engraving using G-code. This allows for engraving on vertical surfaces like walls or doors by mounting the machine appropriately.
- 360° Engraving: With proper setup, the machine can engrave on cylindrical objects or surfaces requiring 360-degree rotation.
- Motion Detection (Fall Protection): The machine includes a motion detection function that can pause carving if the machine is moved or tilted, enhancing safety. This feature can be adjusted or turned off in the software settings.
Video: This video showcases various capabilities of the NEJE Master 2 Mini, including its ability to engrave on different materials, use mobile app control, and perform vertical engraving on surfaces like walls.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your NEJE Master 2 Mini.
- Clean the Laser Lens: Periodically clean the laser lens with a soft, lint-free cloth and lens cleaning solution to maintain engraving precision.
- Clear Debris: Remove any dust, debris, or residue from the machine's rails and moving parts after each use.
- Inspect Cables: Check all cables for any signs of wear or damage. Replace if necessary.
- Laser Module Fan: Ensure the fan on the laser module is free from obstructions to prevent overheating. The smart laser module adjusts fan speed dynamically based on temperature.

Image: An exploded diagram of the Smart Laser Module, highlighting its integrated fan and built-in temperature sensor, which dynamically adjusts fan speed for optimal performance and longevity.
7. Troubleshooting
If you encounter issues with your NEJE Master 2 Mini, refer to the following common problems and solutions:
| Problem | Possible Cause(s) | Solution |
|---|---|---|
| Machine not connecting to PC/App | Incorrect drivers, loose USB cable, Bluetooth off (for app), software version mismatch. | Ensure drivers are installed correctly. Check USB/Bluetooth connection. Update software/app to the latest version. Restart both machine and computer/app. |
| Laser not firing or weak output | Incorrect focus, low laser power setting, dirty lens, damaged laser module. | Adjust laser focus. Increase laser power in software. Clean the laser lens. Contact support if the module is suspected to be faulty. |
| Engraving is blurry or inconsistent | Improper focus, unstable surface, material movement, incorrect speed settings. | Re-focus the laser. Ensure the machine and material are stable. Secure the material. Adjust engraving speed. |
| Machine stops unexpectedly | Motion detection triggered, power interruption, software crash. | Check if the machine was bumped (motion detection). Verify power supply. Restart software and machine. |
8. Specifications
| Feature | Detail |
|---|---|
| Model | Master 2 Mini |
| Laser Output Power | 2.5W |
| Engraving Area | 110 x 120 mm |
| Product Dimensions | 11.02 x 5.12 x 14.96 inches |
| Item Weight | 1.98 ounces |
| Control Software | NEJE Win Software (PC), NEJE App (Android, iOS, iPadOS, macOS) |
| Connectivity | USB, Bluetooth |
| Supported Engraving Modes | Image engraving, text engraving, G-code engraving (offline/vertical) |

Image: A diagram illustrating the precise engraving area of the NEJE Master 2 Mini, measuring 110mm by 120mm.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact details provided in your product packaging or visit the official NEJE website.
Official NEJE Website: www.nejetool.com