Hi there,
This is Bogdan from Romania.
I'm a mechanical engineer, 3D designer and modeler.
I could design "forming cog for 2" roller" in about 1 day.
I will make it in Autodesk Inventor, and I'll provide all the alternative CAD files (iges, stp, stl, sat, etc), including free 3D pdf, with material properties, weight, etc.
Regards
Bogdan