NGRAIN Engineering has created a converter for Autodesk Fusion 360. It allows you to export 3KOs from their cloud-based product.

A trial of Fusion 360 is available here: http://www.autodesk.com/products/fusion-360/overview

If you’re interested in being a Beta user of the converter, we welcome you to contact support@ngrain.com and he will set you up with the plugin and some instructions.

Fusion 360 supports the following file types:

  • Auotdesk Alias (*.wire)
  • AutoCAD DWG Files (*.dwg)
  • Autodesk Fusion 360 Archive Files (*.f3d)
  • Autodesk Fusion 360 Toolpath Archive Files (*.cam360)
  • Autodesk Inventor Files (*.ipt, *.iam)
  • CATIA V5 Files (*.CATProduct, *.CATPart)
  • DXF Files (*.dxf)
  • FBX (*.fbx)
  • IGES (*ige, *iges, *igs)
  • NX (*prt)
  • OBJ (*.obj)
  • Parasolid Binary Files (*.x_b)
  • Parasolid Text Files (*.x_t)
  • Pro/ENGINEER and Creo Parametric Files (*.asm, *.prt)
  • Pro/ENGINEER Granite Files (*.g)
  • Pro/ENGINEER Neutral Files(*.neu)
  • Rhino Files (*.3dm)
  • SAT/SMT Files (*.sab, *.sat, *.smb, *.smt)
  • SolidWorks Files (*.prt, *.asm, *.sldprt, *.sldasm)
  • STEP Files (*.ste, *.step, *.step
  • STL Files (*.stl)​
  • SketchUp Files (*.skp)

Source: How to import or open a file in Autodesk Fusion 360