Remix of mluongo91's brain to make it more printable and split into parts, representing anatomical regions (lobes). 

Printing

• Print with organic supports on buildplate only
• Look at the gcode and touch up/remove supports where needed
• You can add additional 6.2x3.2mm negative volume cylinders on the buildplate if you want to use the model as a fridge magnet. 

Materials

• 6 6x3mm neodymium disk magnets

Assembly

1. Use a bit of thick superglue to glue 3 magnets into Part 2 (the one with 3 holes)
2. Use the magnets that are glued in to align the polarity. You can just attach them and put a dot on the second magnet. The dot will face into the hole.
3. Glue in the remaining magnets

You can also print 6x6mm cylinders to permanently align and glue the parts together.

Note: I think the frontal-parietal split might be wrong, but I'm not touching blender again until I forget how bad I'm at it.