1. Introduction
The Twotrees TS1 Mini Laser Engraver is a compact and versatile device designed for personal and DIY engraving projects. It features a 3W laser, supports multiple connection methods (USB, Bluetooth), and is compatible with various materials like wood, paper, leather, and plastic. This manual provides essential information for safe and effective use of your TS1 engraver.

Figure 1: Twotrees TS1 Mini Laser Engraver and example applications.
2. Safety Information
WARNING: Class IV Laser Product. Avoid direct exposure to eyes. Always wear laser goggles during operation.
To ensure safe operation of your Twotrees TS1 Mini Laser Engraver, please observe the following safety guidelines:
- Always wear the provided laser goggles when the laser is active.
- Do not open the protective cover during engraving operations. Be careful of laser damage.
- Keep the device away from children and pets.
- Operate the engraver in a well-ventilated area to dissipate fumes and odors from engraving.
- Ensure the engraver is placed on a stable, non-flammable surface.
- Never leave the engraver unattended during operation.
- Do not engrave highly reflective, transparent, or unknown materials without proper precautions and testing.

Figure 2: Safety features including protective cover, goggles, and exhaust port.
3. Package Contents
Verify that all items are present in your package:
- TS1 Mini Laser Engraver unit
- Acrylic laser protective cover
- Laser goggles
- USB cable
- Power adapter
- Screwdriver
- Test materials (e.g., wood, black plastic sheets)
- User Manual (physical copy)

Figure 3: Included accessories and components.
4. Setup Guide
- Unpacking: Carefully remove all components from the packaging.
- Placement: Place the engraver on a stable, level, and non-flammable surface in a well-ventilated area.
- Power Connection: Connect the power adapter to the engraver's power input, then plug it into a suitable electrical outlet.
- Computer/Mobile Connection:
- USB Connection: Connect the engraver to your computer using the provided USB cable.
- Bluetooth Connection: Enable Bluetooth on your mobile device and pair it with the TS1 engraver.
- Offline Operation: The device supports offline operation once engraving files are uploaded.
- Software Installation: Install compatible software such as LightBurn or LaserGRBL for PC, or the MKSLaser mobile application.
- Focus Adjustment: The laser head is adjustable for optimal focusing distance (2.5-6.5 cm). Rotate the laser head to achieve the sharpest, smallest laser dot on your material. This ensures precise engraving.

Figure 4: Multiple connection options for the TS1 engraver.

Figure 5: Adjustable laser focus mechanism and precision details.
Video 1: TS1 Mini Laser Engraver Setup and Engraving Demonstration.
5. Operating Instructions
- Material Preparation: Place the material to be engraved within the engraving area (80x80mm). The machine cavity can support objects up to 30mm in height. Ensure the material is stable and flat.
- Wear Safety Goggles: Always wear the provided laser goggles before starting any engraving task.
- Software Interface:
- Open your chosen software (LightBurn, LaserGRBL, or MKSLaser app).
- Import your design. Supported formats include JPG, PNG, BMP, G-code, Gif, SVG, NC, GC.
- Adjust engraving parameters:
- Work Speed: Set the engraving speed (e.g., 800 mm/min).
- Laser Power: Adjust the laser intensity (e.g., 230, range 0-1000).
- Size: Define the dimensions of your engraving.
- Style Setting: Utilize options like 'Gray', 'Strong', 'Sketch' to adjust brightness, contrast, and other image processing settings for optimal results.
- Preview and Position: Use the software to preview the engraving path and adjust the material's position if necessary to ensure accurate placement.
- Start Engraving: Once all parameters are set and the material is correctly positioned, initiate the engraving process from the software.
- Monitoring: Continuously monitor the engraving process. Do not open the protective cover during operation.
- Completion: After engraving is complete, safely remove the engraved item.

Figure 6: Mobile application interface for controlling the TS1 engraver.
6. Maintenance
- Cleaning the Laser Lens: Regularly clean the laser lens with a soft, lint-free cloth. Ensure the device is powered off and unplugged before cleaning.
- Cleaning the Engraving Area: Keep the engraving area free from dust and debris. Use a soft brush or compressed air to remove any residue.
- Exhaust Port: Ensure the exhaust port is clear to maintain proper ventilation and prevent smoke buildup.
- Storage: When not in use, store the engraver in a dry, dust-free environment.
7. Troubleshooting
- No Laser Output:
- Check if the power adapter is securely connected and the device is powered on.
- Verify that the USB or Bluetooth connection is active and stable.
- Ensure the laser power setting in your software is not set to zero.
- Confirm that the protective cover is properly closed, as some models have safety interlocks.
- Poor Engraving Quality:
- Focus: Adjust the laser focus by rotating the laser head until the laser dot on the material is as small and sharp as possible.
- Settings: Experiment with different laser power and speed settings for your specific material. Refer to online resources or material guides for recommended parameters.
- Material: Ensure the material is flat and securely placed to prevent movement during engraving.
- Connection Issues:
- USB: Try a different USB port or cable. Reinstall the device drivers if necessary.
- Bluetooth: Ensure Bluetooth is enabled on both your device and the engraver. Try unpairing and re-pairing the devices.
- Software Not Responding:
- Restart the engraving software and the TS1 engraver.
- Check for any available software updates.
8. Specifications
| Feature | Detail |
|---|---|
| Product Name | TS1 Mini Laser Engraving Machine |
| Main Body Color | Silver gray |
| Main Body Material | Injection molding + aluminum |
| Product Dimensions (L x W x H) | 157mm x 157mm x 167mm (6.22in x 6.22in x 6.69in) |
| Engraving Area | 80mm x 80mm x 35mm (machine cavity supports objects 0-30mm high) |
| Laser Power | 3W |
| Optimal Focusing Distance | 2.5-6.5 cm (adjustable laser head) |
| Compatible Engraving Materials | Plywood, density board, solid wood board, paper, painted metal, kraft paper, leather, plastic, bamboo |
| Product Net Weight | Approx. 1025.7g (±100g) |
| Packaging Size | 203mm x 210mm x 196mm |
| Power Supply | 12V/2A |
| Working Power Consumption | 17.5W |
| Bluetooth | Supported |
| TF Storage | Supported (built-in) |
| USB Port | Supported |
| Engraving Accuracy | 0.1mm |
| Maximum Engraving Speed | 3000mm/min |
| Maximum Acceleration | 320mm/min |
| Compatible Software | LightBurn, LaserGRBL, MKSLaser (mobile phone APP) |
| Controller | GRBL |
| Smart Device | Yes |
| Certification | CE |
| CNC or Not | CNC |

Figure 7: Product dimensions and engraving area.
9. User Tips
- Engraving LEGO Bricks: When engraving LEGO bricks, be aware that light-colored bricks may darken at the laser-engraved areas. For black bricks, the engraving effect may vary depending on the plastic's composition and laser settings. It is highly recommended to perform a test engraving on a spare or inconspicuous part of the LEGO brick using low power settings first to achieve desired results and avoid damage.
- Material Testing: Always perform small test engravings on new materials or when using new settings to determine the optimal laser power and speed.
- Ventilation: Even with the built-in fan, ensure good room ventilation, especially when engraving materials that produce strong fumes.
10. Warranty and Support
For warranty information, technical support, and service inquiries, please refer to the official TWO TREES website or contact your authorized retailer. Please retain your purchase receipt as proof of purchase for any warranty claims.