Magnetic fastening for split cast gypsum modeling system for dental laboratory work has cup for magnet in first casting half facing flat pole plate in second casting half

摘要

The cup has thin walls (1) and base (3) and is embedded in the gypsum with its rim flush with the surface of the gypsum. The disk-shaped magnet fits in the cup and is attracted to a pole plate in the other block of gypsum. The cup and the pole plate have threaded extensions (2) which project into the gypsum blocks and have hexagonal blind bores (5).