Ansys SpaceClaim is a great tool for file translation. It has the ability to import all major CAD formats and neutral file types. 

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Reading/Writing CAD data from/to different CAD systems is often problematic.  SpaceClaim has superb CAD data translation capability between all common CAD systems - including a batch translator.  If imported data has corruption or missing faces - then this can easily be fixed.  SpaceClaim is often bought for this purpose alone - and can save 100's of hours of work.

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File formats Supported :