PUZZLE AUTOBAHNKREUZ 2

Update 29/5/18 : Hints file added

Hi , this is another puzzle very easy to print
model come from Yavuz Demirhan (2013).

Pieces 8 that are identical
Goal 8×8×6
Solutions 1

A little hard to solved when you get each pieces alone,
Very easy to find solution if you get it already assembled before.
So i suggest to begin solving it unassembled to have a true challenge.

Size about 6cm width, 0,2mm tolerance
Designed with FUSION 360 because it is easy to create
a cube matrice and cha