Jamie's magnetic lock box

Made of service and boxwood, with two boxwood and neodymium magnetic 'keys" that are meant to appear just to be handles, but can be removed (they are held in place by thin steel plates on the inside of the box) and then used to lock or unlock the box. The idea of the box was that it should have no visible means of opening or closing it.
The left hand key locks the box by moving a steel hook that is let into a mortice in the front. It pivots up and across, where it lodges above a steel plate fixed to the lid; the plate was shimmed so that when locked, the lid is held quite tightly in position. To prevent the hook from falling back by gravity if the box is tipped sideways, I glued a small round magnet to the hook and filed a flat on the contact surface. Hence the right hand key, used for unlocking, has a stronger magnet, because it has to overcome the force of the magnet on the hook to detach it from the lock plate, as well as moving the hook itself to the left and down. Both locking and unlocking movements are carried out following an 'L' shape (see video). The lock magnet has a pull of about 11kg, and the unlock magnet a pull of 15kg. I was surprised how effectively the magnets worked through a wood thickness of about 5mm, although it took a lot of trial and error to select the correct strengths. And as can be seen I had to enlarge both mortices to reduce the thickness of wood through which the magnetic field has to pass. Now locking/unlocking work first time, with a satisfying click to let you know that the operation was successful.