1. Product Overview
The JEKCA Cat 12S-M02 Black and White Building Blocks set allows you to construct a detailed and sturdy cat sculpture. This set is designed for individuals aged 14 and above, featuring over 1460 pieces and JEKCA's unique Interlocking Brick-through System for enhanced stability.

Image 1.1: Fully assembled JEKCA Cat 12S-M02 Black and White Building Blocks sculpture.
What's in the Box:
- Instruction Manual
- Building Bricks
- Pins
- Pin Driver
- Quick Guide
2. Setup and Assembly
Assembly of your JEKCA Cat 12S-M02 sculpture requires careful attention to the provided step-by-step manual. The unique Interlocking Brick-through System ensures a robust and stable final model.
Understanding the Interlocking System:
JEKCA bricks utilize a patented interlocking system where pins are inserted through the bricks to secure them together. This method creates a strong bond, making the sculpture less prone to accidental disassembly.

Image 2.1: Illustration of the JEKCA Patented Interlocking Brick-through Technology.
Assembly Steps:
- Prepare Your Workspace: Ensure you have a clean, well-lit area with enough space to lay out your bricks and follow the instructions.
- Follow the Manual: Refer to the detailed step-by-step assembly manual included in your package. Each step will guide you on which bricks to use and where to place them.
- Insert Pins: After placing bricks as indicated, use the provided pins to secure them. Insert the pin through the designated holes in the bricks.
- Lock Pins with Pin Driver: Once a pin is inserted, use the Pin Driver tool to turn the pin 90 degrees. This action locks the bricks firmly in place, creating a stable connection.

Image 2.2: Step-by-step guide for connecting JEKCA bricks using pins and the pin driver.

Image 2.3: Detailed illustration of inserting and locking a pin with a 90-degree turn.
Assembly Tips:
- Sort bricks by color and size before starting to streamline the process.
- Double-check each step against the manual to ensure correct placement and orientation.
- Apply firm but gentle pressure when inserting pins and turning with the Pin Driver.
3. Operating and Display
Once assembled, your JEKCA Cat 12S-M02 sculpture is ready for display. The interlocking system ensures the model is sturdy and maintains its form, making it suitable for various display environments.
Display Recommendations:
- Place the sculpture on a flat, stable surface to prevent accidental falls.
- Avoid direct sunlight or extreme temperatures to preserve the color and integrity of the plastic bricks.
- Keep out of reach of small children and pets to prevent damage or choking hazards due to small parts.
4. Maintenance
To keep your JEKCA sculpture looking its best, occasional cleaning is recommended.
Cleaning Instructions:
- Use a soft, dry cloth or a soft-bristled brush to gently remove dust.
- For more stubborn dirt, lightly dampen a cloth with water and mild soap, then gently wipe the affected areas. Avoid harsh chemicals or abrasive cleaners.
- Ensure the sculpture is completely dry before returning it to display.
5. Troubleshooting
If you encounter any issues during assembly or with the finished product, refer to the following common solutions.
Common Issues and Solutions:
- Bricks not fitting together: Ensure you are using the correct bricks for the step and that they are oriented correctly. Check for any debris in the brick holes.
- Pins not locking: Make sure the pin is fully inserted before attempting to turn it 90 degrees with the Pin Driver. If resistance is met, do not force it; re-check brick alignment.
- Sculpture feels unstable: Review previous steps in the manual to ensure all pins are correctly inserted and locked. The JEKCA system is designed for sturdiness, so instability usually indicates an assembly error.
- Missing or damaged parts: Carefully check all packaging. If parts are genuinely missing or damaged, please contact JEKCA customer support for assistance.
6. Specifications
| Specification | Detail |
|---|---|
| Model Number | ST19CA12-M02 |
| Product Dimensions | 18.7 x 4.17 x 10.98 inches |
| Item Weight | 2.33 pounds |
| Number of Pieces | Over 1460 |
| Recommended Age | 14 years and up |
| Manufacturer | JEKCA Limited |

Image 6.1: JEKCA Cat 12S-M02 with approximate dimensions.
7. Official Product Video
Watch the official JEKCA video to see the building blocks in action and learn more about the interlocking system.
Video 7.1: JEKCA Building Blocks for Kidults. This video demonstrates the assembly process and showcases various JEKCA brick sculptures.
8. Warranty and Support
Warranty Information:
Specific warranty details for JEKCA products are not provided in this manual. Please refer to the product packaging or contact JEKCA directly for warranty information.
Customer Support:
For further assistance, inquiries about missing parts, or technical support, please contact JEKCA customer service or visit their official store.
- Manufacturer: JEKCA Limited
- Online Store: Visit the JEKCA Store on Amazon