We are having issues with importing iges files that were exported from Solidworks. Here is a little background, We use Smartcam and UGNX to machine surfaces from files that are exported from Solidworks. Smartcam can only import iges files while UG can import Iges and Step files. Either was we are coming up with untrimmed surfaces in Smartcam and UG. When this happens, the programmer has to go into the file and search for the bad surfaces and either delete or fix them. Can anyone tell me why this is? Does anyone has a workaround or suggestion to fix this issue? My CAM guys hate me and solidworks because we are giving them problem files. I would like to say to them that they need to update to a Solidworks machining partner but can't.