This is an improved version of my last model.
1) I've added 6 holes to bottom for inserting M8 bolts for added weight. The magnet that attaches the Watch to the charging disk is so strong that the whole thing might come along when removing the watch. Extra weight helps with this.
2) I've changed the hole behind the loading disk to have threads and I've added a screw that fit those threads. The idea here is to pin the charging disk into place but still be able to remove it later if neccessary.