I am designing a Punch & Die multi-stage form tool.
My component received from my client is in a Iges format and when inserted in Autocad or Mechanical desktop I have a surfaces model.
Another converter changed the component into a "Body" part

I require these surface models or "Bodies" to be converted into Solid Models to extract the components to have my resultant Punch and Die form.

What is the easiest method of achieving this in AutoCAD without losing CAD-data.

Rafeek