Magnet maneuvered bolt (child safety)

A small bolt that can be placed in the inside of a thin door, for example of a 3D printer cabinet door, to stop small children from opening the door.

Requires a hole to be made in the bottom frame to fit the bolt.

A small 10x2.5 mm neodym magnet is mounted in the hole of the bolt, and then another magnet can be used to lift the bolt from outside.