I think I've learned a new way to share 3D models, but I haven't perfected it.
I modeled my fedora with Autodesk's free app and program 123D Catch. You can use it on your iPhone or Android or you can upload photos through their website. It takes the photos and creates a 3D model. The 3D mesh often has errors but I use it as a base and then 3D model around it. I used Blender.
This fedora came from Cuba, a trip in March of 2014.
Here is the 3D model: