Printing Object in multiple parts
From what I understand, you're trying to partition your object into smaller pieces with the hopes of putting them back together in a manner similar to a Jigsaw puzzle.

There are two options that I know of to do this, which requires using OpenSCAD:


The PuzzleCut library - This allows you to disassemble your object into a multiple pieces that can be assembled together in a jigsaw puzzle type manner
The PinCut library - This allows you to disassemble your objects into multiple pieces that than be reassembled using the pins and corresponding holes on the pieces.