1. Introduction
The SUNLU UV Resin Curing Box RC II is a state-of-the-art device designed for efficiently curing photopolymer resin models produced by SLA/DLP/LCD 3D printers. Featuring 360° fast curing, a large curing space, and an integrated air drying function, it ensures optimal post-processing for your 3D prints. This manual provides essential information for the safe and effective use of your curing box.

2. Key Features
- Large Curing Space: Offers a generous 200*200*250mm internal curing space, accommodating various model sizes.
- Fast Air Drying: Incorporates a self-developed patented air duct technology, reducing model air drying time by up to 60% compared to natural air drying.
- Three Adjustable Wind Speeds: Customize drying with low, medium, and high wind speed settings to suit different materials and projects.
- 360° Curing Surround: Equipped with 20 UV lamps (4 on top, 4 on the bottom, and 12 on the sides) for uniform, all-round irradiation and thorough curing.
- Removable Turntable: The transparent turntable is easily removable for convenient cleaning and maintenance.
- Solid Weight-bearing: Features a roller support design with a maximum load capacity of 2kg, suitable for large-volume models.
- High Power Curing: Boasts a 42W power output, 42% higher than previous generations, ensuring deep light penetration and enhanced curing effects.
- Integrated Design: All-in-one unit, ready to use without complex installation.

3. Package Contents
Upon opening the box, please ensure all the following items are present:
- SUNLU UV Resin Curing Box RC II Unit
- Power Adapter
- Removable Turntable
- Instruction Manual
4. Setup Instructions
- Unpacking: Carefully remove the curing box and all accessories from the packaging.
- Turntable Installation: For first-time use, install the transparent turntable inside the curing box. Place it securely on the central rotating mechanism.
- Power Connection: Plug the power adapter into the designated port at the back of the curing box. Connect the other end to a suitable power outlet. The indicator light on the front panel will illuminate, indicating power is applied.

5. Operation Guide
- Power On: Short press the main control button (usually a rotary knob) on the front panel to turn on the device. The display will show a default time, e.g., "15:00".
- Place Model: Open the front door and carefully place your 3D resin model in the center of the turntable. Close the door securely.
- Select Mode: Long press the main control button to cycle through the available modes:
- Mode 1 (DR light on): Air drying only.
- Mode 2 (UV light on): UV curing only.
- Mode 3 (DR+UV light on): Air drying and UV curing simultaneously (default mode).
- Adjust Duration: Once a mode is selected, rotate the main control button to adjust the desired operation duration. The time can typically be set from 1 to 99 minutes.
- Start Operation: Short press the main control button again to start the selected process. The timer will begin counting down.
- Adjust Wind Speed (Air Drying Mode): If you are in Mode 1 (Air drying only) or Mode 3 (Air drying + Curing), you can adjust the wind speed by rotating the main control button during operation. Options typically include Low, Medium, and High.
- Checking Drying Status: During air drying mode, you can open the door to check the model's drying status at any time.
- Important Safety Note: Do NOT open the door during UV curing mode operation to avoid exposure to UV light.
- Completion: The device will automatically stop once the set time has elapsed.



6. Maintenance
- Cleaning: Regularly clean the interior of the curing box and the turntable. The turntable is removable for easier cleaning. Use a soft, dry cloth. For resin residue, use a small amount of isopropyl alcohol.
- UV Lamp Care: Ensure the UV lamps are free from dust or resin splashes to maintain optimal curing performance. Do not touch the UV lamps directly.
- Storage: When not in use, store the curing box in a cool, dry place away from direct sunlight.
- Power Disconnection: Always unplug the device from the power source before cleaning or performing any maintenance.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Power adapter not connected or faulty; Power outlet issue | Ensure power adapter is securely connected. Try a different power outlet. Check adapter for damage. |
| UV lights not turning on | Incorrect mode selected; Door not fully closed | Ensure UV curing mode (Mode 2 or 3) is selected. Verify the door is completely closed. |
| Model not curing properly | Insufficient curing time; Resin type incompatibility; UV lamps dirty or faulty | Increase curing duration. Ensure resin is compatible with UV curing. Clean UV lamps. Contact support if lamps are faulty. |
| Air drying not effective | Low wind speed setting; Blocked air vents | Increase wind speed. Check and clear any obstructions from air vents. |
8. Specifications
| Parameter | Value |
|---|---|
| Model | RC-2 |
| Net Weight | 2.4 KG |
| External Size | 245 x 235 x 305 mm |
| Internal Size | 230 x 230 x 250 mm |
| Maximum Curing Size | 200 x 200 x 250 mm |
| Number of UV Lamps | 20 (4 top, 4 bottom, 12 side) |
| Color | Black |
| Power | 42 W |
| Adapter Input | AC 100V~240V 50Hz/60Hz |
| Adapter Output | DC 12V±0.2V 3.5A |
9. User Tips
- Resin Compatibility: The SUNLU UV Resin Curing Box RC II is generally compatible with various UV resins, including those used for molding applications like jewelry (e.g., earrings). Always check the resin manufacturer's recommendations for curing times and UV wavelength compatibility (this unit uses 450nm UV light).
- Optimal Curing: For best results, ensure your models are thoroughly cleaned of uncured resin before placing them in the curing box.
- Ventilation: While the device has an air drying function, ensure adequate room ventilation when working with resin, as fumes can be present.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official SUNLU website or contact your retailer. Keep your purchase receipt as proof of purchase.





