I saved an engine assembly as a part, which created a part which is only exterior surfaces (which is what I want). Next I want to save this surface model to .STEP format so that I can send the model a customer. However, when I have tried to do this I get an error along the lines of "No solid volumes detected". Does anyone know of a way to save a surface model to a common format such as .STEP, IGES, or Parasolid?
Thanks for your help.