Problems creating 3D .pdf

The problem is that most of them come out invisible. The file itself gets created along with the interface but there is no 3d model to be seen. Unless the part is created in solidworks or based on an imported .igs file.

The model im trying to show is usually either a point cloud or a mesh. .igs works well enough but only if the file size is very small otherwise importing the .igs just crashes solidworks. Does anyone have any advice?

Ive been trying to create 3d .pdf files to use as an update on jobs for our customers since they dont have anything fancy to open complex models and I like the idea of a small file size to just email through.

SolidworksImport export