Hi, I want to convert .IFC file to .STEP file using c# .Net with the use of Aspose.CAD, converted step file not open in solid works application, as well, are there any options in the ASPOSE library to stitch the faces us…...Save(outputStepPath, new StepOptions()); } } Make sure to replace inputIfcPath...investigate the reasons and make proper fixes. We can only guessing...