SketchFab - show your 3D model in real 3D on-line

Using Sketch? Want to show your design in 3D? Stunning 3D view? Rotate, zoom, the whole lot? Head over to https://sketchfab.com/ upload your object and try it out! The service has a free option (small ads, no big deal) and would be great to use for showing some objects, the results of a class project etc. They made a Video explaining the features. Here is an example of an embedded 3D model (uploaded and hosted on Sketchfab)   

Maison d'artiste from Klaas Nienhuis on Sketchfab.