3D Model of Part Appears Transparent from Side and Bottom

[maui]

IGES (IGS) format is almost abandoned, IGES format always brings in parts as a surface model
an old discussion here:

Trouble importing full 3D PCB into SolidWorks

if you look at the web: https://www.google.com/search?q=iges+vs+step http://thatcadguy.blogspot.it/2012/12/step-vs-iges-or-why-step-is-better.html you get some tips when I decided to develop the exporter the options were: kicad IgesUp kicad StepUp then the rest is just code