The box closes thanks to the ball held by a magnet, to open it, you have to give it a clean blow to make the ball detach from the magnet and free the joint.you need: ⬇️
- 10 mm diameter steel ball:
https://amzn.to/3sCuGLi
- A neodymium magnet with a diameter of 6 mm and a thickness of 2 mm:
https://amzn.to/45EC4Zn