I was exporting some SolidWorks models in U3D format for our graphic designer to play with.  The U3D files got about 150% larger in size compared to the SW files (13.5Mb vs 20.5Mb).  Under the knowledge base (S-022753), it says "The *. u3d format should be smaller in size  compared to the SolidWorks file."  That is the case in some of my models (6Mb SW file turns into 250Kb U3D file) but not across the board.  There aren't any options to play with when saving thess off.  Any insights?  JP