Power Distribution Post M10

This is a DIY version of a power distribution post for big power cables, originally intended for marine applications, although automotive use isnt much of a stretch.

It is built up from 3 printed pieces, designed with many good intentions and little practical experience. The inner piece is best printed on it's side in order to make it strong in the vertical pulling direction. The outer piece is meant to be printed flat (upside down works best for supports and tolerances) and is meant to provide some resistance to the layers of the inner piece coming apart when the bolt is twisted.
Update: I have edited the STL's to situate the parts in the (IMO) correct orientation..

All parts fit together perfectly for me on my first print in 0.20 layer resolution with a .40 nozzle. Some slight tolerances have been taken in to account but you can tweak during slicing should you have any trouble with parts fitting together. No snap fitting is used.. glue the bottom cover if you want it secure.