A fun game of magnetic attraction and repulsion that makes the system similar to the tractor beam of science fiction films.
The big magnet is 20×3 mm and small one is 5×2 mm (2 magnet for each hole) , In the hexagon use the same dimension for to make the holes. The small holes are 2mm distant from the big one all at the same distance between them, positioned at the vertices of the hexagon. The shape is not important i make hexagon because more easy to cut with a hand saw.
Use magnets at the same grade, i use all neodymium magnets N42