WANHAO Duplicator i3 - Z-Axis Alignment Block with Magnet feature

This is my personal version of the Z-Axis Alignment Block for the WANHAO Duplicator i3. It could be use for other printers but I designed it with the WDi3. The cavity at the base is to place a .750" dia x .375" thick magnet to ease the alignment process. In order to make sure both Z-Axis motors are aligned at the same height, I'm not recommending printing two of those to align both side at the same time. Getting two CNC machined parts at the exact same size is hard, so getting two 3D printed pa