Impossible Dovetail Puzzle Box

This is a classic version of the dovetail puzzle box. Although this concept is not new or original, I wanted to practice my 3d modeling skills and create several versions that accommodate the supplies I had. Overall Dim. 3in x 3in x 2inA. 8x2mm magnet and 8mm dia. steel bearingB. 6x2mm magnet and 6mm dia. steel bearingC. 10x2mm magnet and 10mm steel bearingD. 3x2mm magnet and 6mm dia. steel bearing