Removing wireframe details on step files

All,

  I have created an stp. file of an assembly, however when opening it up and selecting the wireframe view I can still see & measure the internal details. Is there a way that a stp. file can be ceated so that the internals are a solid and no details can be seen from the wireframe view.

I look forward to all your advice.

Kind regards

Daniel

SolidworksAssemblies