To align the lateral trenches, I added an evergreen strips (4mmx2mm) over the entire length, and I then glue with cyano.

The nose is a solid part so it needs to be hollowed to later allow the passage of the optic fibers.



The end of each aluminum tube will later receive a cache that will be realized with cutted part from the trench.

By positioning the upper triangles, trench parts gaps and heigth differences are highlighted.

This is corrected with plastic strips.