1. Introduction
The MyBuild Mecha Frame 5 series offers engaging mecha building kits designed to stimulate creativity for enthusiasts of robots, mecha, and building blocks. This Keiji Blue Mech set, model 5005, is designed by Hero Design Studio and the MyBuild team at T-Fun Co Ltd in Taiwan. Inspired by a light Sci-Fi novel, Keiji's armor is blue, honoring the memory of Rita. This special mecha design includes a cockpit for a mini pilot figure. The high-quality brick construction features posable joints, allowing for various dynamic postures. All components are compatible with other standard building bricks, offering extensive customization possibilities. The kit includes well-designed, step-by-step building instructions for an enjoyable construction experience. Additional building ideas and instructions are available on the official MyBuild website. This kit is suitable for beginner and intermediate builders aged 6 and up.
2. Product Overview
The MyBuild Mecha Cadre Keiji Blue Mech is a highly articulated building toy, standing approximately 5 inches (12.7 cm) tall when assembled. It features a robust core frame system that simplifies construction and enhances stability. The set includes 169 pieces, allowing for a detailed and poseable model.

Image: The fully assembled MyBuild Keiji Blue Mech, showcasing its dynamic posing capabilities and included weapon.
Key features include:
- MyBuild Core Frame System: Essential brick pieces form a central frame, allowing for construction on all sides and secure locking with other building bricks.
- Ingenious Construction Design: The design ensures an interesting and engaging build, resulting in a model with good movement and a wide variety of posing options.
- 100% Compatible Bricks: All bricks are compatible with other major building brick brands, enabling expansion and enhancement of your creations.
- Science-Fiction Inspired: The design draws inspiration from a light science-fiction narrative, bringing the character of Keiji Kiriya to life.
- Pilot Mini-Figure Compatibility: The mecha features a cockpit designed to accommodate a mini pilot figure (figure not included in this set).
3. Setup and Assembly
Follow these step-by-step instructions to assemble your MyBuild Keiji Blue Mech. Ensure you have a clean, flat surface to work on and keep all pieces organized.
3.1. Core Frame Construction
Begin by assembling the core frame structure. This system is designed for ease of use, allowing you to build outwards from a central skeleton.

Image: Illustration of the MyBuild core frame system, highlighting key joint components and the basic skeletal structure.
The core frame utilizes specialized joint pieces that connect securely, forming the foundation for the mecha's articulation. Refer to the included instruction booklet for detailed diagrams on connecting these initial pieces.
3.2. Attaching Armor and Details
Once the core frame is complete, proceed to attach the blue armor plates and other detailed components. Pay close attention to the orientation of each piece as shown in the instructions.

Image: Step-by-step guide on attaching armor panels and placing a mini-figure into the mecha's cockpit.
The instructions will guide you through building the legs, arms, torso, and head, ensuring all posable joints are correctly integrated. The cockpit area is designed for easy access to place a mini-figure (sold separately).
3.3. Final Touches
Complete the assembly by adding any remaining accessories, such as the sword. Double-check all connections to ensure the mecha is stable and all parts are securely attached.
4. Operating and Posing
The MyBuild Keiji Blue Mech is designed for extensive articulation, allowing for a wide range of dynamic poses. Its well-balanced design ensures stability even in complex stances.

Image: The MyBuild Keiji Blue Mech displayed in several different action poses, demonstrating its articulation.
- Joint Movement: Gently manipulate the joints in the shoulders, elbows, hips, knees, and ankles to achieve desired poses. Avoid excessive force to prevent damage.
- Stability: Experiment with different leg and foot positions to find stable stances for your mecha. The wide feet provide a good base.
- Customization: Utilize the brick compatibility to enhance your mecha with additional parts from other MyBuild sets or compatible building brick brands. This allows for unique modifications and expanded play scenarios.
5. Maintenance
Proper care will ensure the longevity of your MyBuild Keiji Blue Mech.
- Cleaning: To clean the bricks, wipe them gently with a soft, damp cloth. For deeper cleaning, use mild soap and water, then rinse thoroughly and air dry. Avoid harsh chemicals or abrasive materials.
- Storage: Store the assembled mecha or loose bricks in a cool, dry place away from direct sunlight to prevent discoloration or warping.
- Handling: Handle the assembled model with care, especially when posing, to avoid accidental disassembly or damage to the joints.
6. Troubleshooting
If you encounter any issues during assembly or operation, consider the following:
- Missing Pieces: Carefully check the packaging and surrounding area. If a piece is genuinely missing, contact MyBuild customer support.
- Difficulty Connecting Bricks: Ensure the bricks are correctly aligned and apply firm, even pressure. Some new bricks may require a bit more force initially.
- Loose Joints: If a joint feels too loose, ensure all connecting pins or studs are fully inserted. Over time, repeated posing can slightly loosen joints; consider disassembling and reassembling the specific joint if needed.
- Model Instability: Re-examine the leg and foot positioning. Ensure the mecha's weight is evenly distributed and that its feet are flat on the surface.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | MyBuild |
| Model Number | KEIJI 5005 |
| Product Dimensions (L x W x H) | 5.79 x 18.21 x 15.49 cm (packaging); Assembled: 12.7L x 12W x 12.7H cm |
| Item Weight | 176.9 grams |
| Recommended Age | 8 years and up (Manufacturer's minimum recommended age: 96 months) |
| Number of Pieces | 169 |
| Material | Plastic (Acrylonitrile Butadiene Styrene) |
| Color | Blue |
| Theme | Science-fiction |
| Assembly Required | Yes |
| Educational Objective | Creativity |

Image: Product packaging and dimensional overview of the MyBuild Keiji 5005 set.
8. Warranty and Support
For information regarding product warranty, returns, or additional support, please refer to the official MyBuild website or contact their customer service directly. MyBuild is committed to providing quality products and assistance to its customers.
Manufacturer: T-FUN
Official Website: www.mybuildtoy.com (Please note: This is a placeholder URL as the actual official website was not provided in the data. Users should verify the correct URL.)