CW wrote:
The base is split, separated by a non magnetic substance. The magnet is
rotated by the switch. When the individual poles line up with individual
halves of the body, the base sticks. When the magnet is rotated so both
poles line up with the same half, the magnetism, for the most part, is
contained within the body.


Could be interesting to make one myself,but maybe it would be too much
work...