I just google and found somethin about an MCAD Button fo EAGLE. If you do not use EAGLE, maybe you´ll find something similar.
"MCAD Button
This single click option is the first STEP toward true ECAD to MCAD integration. The MCAD button pushes your design to the ECAD.io website where you can view and manipulate your PCB in 3D in all of its glory.
From the ECAD.io page, you can associate your 3D component data (don’t worry, it remembers your positions and orientations, so you only need to do this once), store & manage your 3D models, and export to STEP, Parasolid, STL or even an OBJ file. Look for libraries of 3D models to grow over the coming weeks as we build out this functionality and hone what’s necessary for you to build high-quality PCBs in glorious 3D!"
(Source: **broken link removed**)
Best regards,