1. Introduction
The Twotrees TR2 PRO is a versatile 4-in-1 Y-axis rotary attachment designed to expand the capabilities of your laser engraver. It allows for precise engraving on a wide range of cylindrical, spherical, and ring-shaped objects that would otherwise be difficult or impossible to engrave with a standard flatbed setup. This manual provides essential information for safe and effective use, including setup, operation, maintenance, and specifications.


2. Warnings & Safety Information
Read all safety warnings carefully before operating the device.
2.1 Fire and Burn Hazard
- High temperatures generated during processing may ignite the workpiece, smoke, or surrounding materials.
- The processing area must be kept clear of flammable substances and equipped with fire extinguishing equipment.
- After processing, the workpiece and machine components (e.g., spindle, laser head) may remain hot for an extended period; verify full cooling before handling.
2.2 Mechanical Injury Hazard
- High-speed rotating spindles, moving gantries, belts, and lead screws pose serious risks of crushing, cutting, or entanglement injuries.
- Before performing any installation, commissioning, cleaning, or maintenance operation, disconnect the machine from the main power supply.
2.3 Electrical Hazard
- High-voltage circuits are present internally. Unauthorized personnel must not open the electrical control cabinet.
- All electrical connections must comply with local regulations and be performed by qualified electricians.
2.4 Hazardous Substances and Fumes
- Processing certain materials (e.g., plastics, composites, coated metals) may generate toxic, carcinogenic, or irritating fumes and dust.
- Use only in environments equipped with an effective Local Exhaust Ventilation (LEV) system.
3. Setup Instructions
The TR2 PRO is designed for ease of use with a 90% pre-assembled structure, allowing for quick setup.
3.1 Unpacking and Initial Inspection
- Carefully unpack all components. Refer to Figure 1 for a visual overview of the main unit and accessories.
- Inspect for any visible damage during transit.

3.2 Installation Method
This accessory must be installed by personnel trained by the equipment manufacturer or otherwise qualified professionals. Incorrect installation may result in equipment damage, performance degradation, or safety hazards.
- Preparation: Confirm compatibility of the accessory model with your laser engraver. Ensure the workspace is clean and well-ventilated.
- Power Disconnection: Shut down the host machine and unplug it from the main power source. Wait until all components (especially the laser source and spindle motor) are fully cooled.
- Removal of Old Component (if applicable): Refer to your laser engraver's manual. Record wiring connections and mechanical positioning, then carefully remove the component to be replaced.
- Installation of New Component: Install the TR2 PRO in reverse order of removal. Ensure all mechanical connections are securely tightened and all electrical connections are correct, properly polarized, and firmly secured.
3.3 Adjusting for Different Objects
The smart mechanical structure design makes it easy to adjust the support module height and the chuck diameter. You can switch the mounting combination to suit the item you want to engrave in minutes.

3.4 Software Compatibility
The TR2 PRO is compatible with popular laser engraving software:
- LightBurn: Layout, editing, and control software for common laser cutters. Supports engraving file formats like NC, BMP, JPG, PNG, DXF, etc.
- LaserGRBL: Free laser engraving software that can load images, pictures, and logos for engraving.
A dedicated cable is provided for multiple connection options with most laser engravers.

4. Operating Instructions
The TR2 PRO offers four distinct rotary modes for diverse engraving needs.
4.1 Roller Rotary Mode
Ideal for long cylindrical objects like baseball bats or wine glasses. The engraving process begins naturally when the object is placed on the rollers, eliminating the need to consider length or diameter manually.


4.2 Chuck Rotary Mode
Customize mugs, tumblers, and other cylindrical items with vector engravings. The soft-pad jaws provide strong friction and prevent damage to brittle objects. This mode supports objects with a length over 90mm, spherical items, and mugs.


4.3 Sphere Rotary Mode
Engrave spherical objects like Christmas balls or Easter eggs. The suction cup assembly allows for sliding adjustment to adapt to different ball diameters (50-105mm).

4.4 Ring Rotary Mode
Achieve perfect engraving on rings, even those with the smallest diameters. The Y-axis Pro rotary improves maximum angular speed to 360°/s for amazing detail.


4.5 Calibration and Testing
After installation, recalibrate the relevant systems (e.g., laser power, tool length, engraving area) as specified in your laser engraver's manual. Conduct a low-power/low-speed no-load test under safe conditions to verify smooth operation, absence of abnormal noise, and absence of alarms before resuming normal use.
5. Maintenance
Proper maintenance ensures the longevity and optimal performance of your TR2 PRO rotary attachment.
- Cleaning: Keep the workspace clean and free of dust and debris, especially around moving parts and rollers.
- Component Inspection: Regularly check all mechanical connections for tightness and wear.
- Cooling: Ensure all components, especially the laser source and spindle motor of your main engraver, are fully cooled after use before handling or performing maintenance.
- Lubrication: Refer to your laser engraver's manual for any lubrication requirements for rotary components.
6. Troubleshooting
This section addresses common issues you might encounter. For more complex problems, refer to the comprehensive PDF manual or contact customer support.
- Abnormal Noise/Operation: If you experience unusual noises or erratic movement, immediately power off the system. Check for any obstructions, loose connections, or damaged parts. Recalibrate if necessary.
- Engraving Inaccuracy: Ensure the object is securely mounted and properly centered. Verify that the laser engraver's settings (power, speed, focus) and the rotary's calibration are correct for the material and object type.
- Connection Issues: Double-check all cable connections between the rotary attachment and your laser engraver. Ensure the correct software drivers are installed and recognized.
7. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 410 x 214 x 105 mm |
| Product Weight | 2.66 kg |
| Chuck Rotary Ratio | 5.7:1 |
| Chuck Rotary Diameter Range | 26 - 140 mm |
| Engrave Diameter Range (Roller) | 5 - 150 mm |
| Engrave Diameter Range (Chuck) | 1 - 115 mm |
| Engrave Diameter Range (Sphere) | 50 - 105 mm |
| Engrave Diameter Range (Ring) | 15 - 110 mm |
| Precision Control | Up to 0.45° |
| Maximum Angular Speed | 360°/s |
| Compatible Engravers | Twotrees TS2 and other open laser engravers |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -10°C to 50°C |
| Ingress Protection Rating | IP20 (dust-protected, no water protection) |




8. User Tips
- Compatibility Check: Always verify that the TR2 PRO is compatible with your specific laser engraver model (e.g., TTS 10, TTS20 Pro) before attempting installation or operation. While designed for Twotrees machines, checking your engraver's manual for rotary attachment support is recommended.
- Ventilation: When engraving, especially materials that produce fumes or dust, ensure your workspace has an effective Local Exhaust Ventilation (LEV) system to maintain air quality and safety.
- Object Stability: For optimal engraving results, ensure the object is firmly secured in the chosen rotary mode. The separable level tool can be particularly helpful for irregular or extra-long cylindrical items to maintain stability.
- Test Engravings: Before a final engraving, perform a low-power, low-speed test on a scrap piece of the same material to fine-tune settings and ensure desired results.
9. Warranty & Support
9.1 Manufacturer Information
- Brand: TWOTREES
- Manufacturer Name: Shenzhen Two Trees Technology Co., Ltd.
- Address: 402, Building 11, No. 9, Qilin Road, Nankeng Community, Sakata Street, Longgang District, Shenzhen City, Guangdong Province, China
- EU Responsible Person: AMZ ECREP SL, Calle Gran Via 49, 7 Deb. Spain
9.2 Disclaimer
By using this product, the user acknowledges and agrees to the following terms:
- The manufacturer and seller shall not be liable for any direct or indirect damages resulting from:
- Failure to operate, maintain, or store the device in accordance with this manual and all accompanying safety guidelines.
- Unauthorized modification of the device, or use of non-OEM or incompatible accessories or software.
- Use of the device outside its intended purpose, or processing of prohibited or unknown materials.
- Installation, commissioning, or repair performed by personnel not authorized or trained by the manufacturer.
- Damage caused by force majeure or unforeseen events such as fire, flood, lightning strike, or abnormal voltage.
- Normal wear and tear (e.g., natural power decay of the laser module over time).
9.3 Additional Resources
A comprehensive user manual in PDF format is available for download. Please refer to the official product page or contact customer support for the link.
For further assistance, please contact Twotrees customer support.