Combination Lock with Automatic Release

Introducing a truly unique 4-digit mechanical combination lock. This model stands out for its compact height of just 6.5 cm, making it ideal for space-constrained applications without compromising functionality or strength.

Built to be robust and aesthetically pleasing, the lock operates via a simple yet effective mechanical system. With the addition of a common pen spring, it transforms into an automatic release device, enhancing practicality and the “wow” effect of opening.

Setting your personal combination is easy and intuitive, designed even for those without experience with such devices.

Key Features:

• Original and unique design
• Fully mechanical 4-digit combination
• Total height: only 6.5 cm
• Automatic release mechanism with a simple pen spring
• Easy to customize with your own combination
• 3D print optimized for precision and robustness

Notes:
The file includes all the necessary parts for printing. A standard click pen spring is required for the correct operation of the automatic release. Minor post-production adjustments.

This is a fully custom-designed 3D printed mechanical combination lock, personally drawn, modeled, and created by me. It's a unique piece, both compact and robust, with a total height of just 6.5 cm, perfect for tight spaces while still offering durability and style.

Designed to be strong and visually appealing, the lock features a clever auto-release mechanism using a simple pen spring, making it not just functional but also fun and satisfying to use.

The 4-digit combination can be easily set and changed, even by beginners. No electronics, just pure mechanical ingenuity.

Key Features:

• 100% original and unique design
• Fully mechanical 4-digit combination system
• Total height: only 6.5 cm
• Auto-release system powered by a standard click pen spring
• Easy to customize your own personal combination
• Optimized for accurate and sturdy 3D printing

Notes:
All STL files required for printing are included. You will need a standard pen spring to enable the auto-release mechanism. Minor post-production adjustments.