Having finished all our productions with several weeks left in the semester, we were in need of a project for the lab class.  I thought it would be interesting to have the students make a real proppy, prop that would involve making molds, mass producing pieces, adding electronics & paint.  The Sky Captain ray gun looked cool, was available in a 3D printable format & could be modified to add lights.  
 
     Ray gun design from Sky Captain & the World of Tomorrow. This is the rendering that accompanied the 3D files available online.
3D resin print with cast clear polyurethane tip & radiator
Silicone mold of main body
Polyurethane castings
 
      
      
      
      
     Finished version of printed prototype