Magnet Bricks

I’ve been working on a new idea—magnetic blocks; they also work well as a small magnetic toy. Requires magnets 4mm(D) x 2mm(H), When installing magnets, one side requires all “N” side and the other side of the casing is requires all “S” side. 2 X 2 piece requires 8 magnets 2 X 3 piece requires 12 magnets 2X 4 piece requires 16 magnets