Magnetic screwdriver bit holder

need 3 M3 bolts, 3 M3 square nuts, and 56 8x3mm neodymium magnets.  for indoors use print PLA for outdoor in the car use print ABS or ASA other high temp materials.  No need to glue the magnets in place, they stay in secured by top part that is bolted to the bottom part.  Bits have snap on quality and do not fall out but are held in place even if  you flip it upside down and shake it.