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Valentine's Mechanical Locking Box 3D Printer File Image 1
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Valentine's Mechanical Locking Box

Brian3D avatarBrian3D

January 22, 2026

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Description

Boost MeOn the grind to get an H2C from points. Every boost gets me $1 closer is is greatly appreciated! 🙏Membership

Valentine’s Mechanical Locking Box 💖🔐

Celebrate love with a gift that’s as thoughtful as it is clever! The Valentine’s Mechanical Locking Box combines elegance, interactivity, and practical function in a compact, 3D-printable design 🎁.

At its heart is a precision-designed rack-and-pinion locking mechanism ⚙️. Turning the pink heart-shaped key 💗 rotates the central gear, moving the racks that securely lock the drawer. Once unlocked, the drawer slides smoothly for a satisfying, premium feel ✨. Every part — from the gear teeth to the rails — is engineered with tight tolerances to ensure reliable movement and long-lasting usability, making this box both fun and functional.

Its compact size makes it perfect for holding small keepsakes, jewelry, trinkets, or surprise notes ✨, while doubling as a practical desktop accessory or storage solution. The minimalist, rounded-cube design with embossed hearts ❤️ on the sides gives a subtle Valentine’s touch, keeping the focus on both form and function.

This box is original and unique 🌟, merging romantic symbolism with mechanical ingenuity. Its combination of interactive engagement, aesthetic appeal, and practical value makes it a versatile, charming, and meaningful gift for any occasion 💝.

 

 

ASSEMBLY:

 

1. Make sure you have all of the necessary printed parts before assembly

 

2. Place the two locking pieces into the frame as shown (make sure that they are in the fully extended position)

 

3. Place the gear into the center of the frame (ensure that the dot on the gear is pointing up)

 

4. Snap on the assembled lock frame to the drawer (the respective pins on the drawer will align and press into the holes on the frame)

          

5. These parts should sit flush with one another (as shown in the image above)

 

6. Install the heart shaped handle into the newly assembled drawer (this will press into the respective square slot)

 

7. Slide the fully assembled drawer into the body of the box

 

8. Use the key to lock and unlock the drawer

 

Please reach out to me if you have any additional questions or requests, I will be more than happy to answer any!

License:

MakerWorld Exclusive License

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