Additional File Formats Supported SOLIDWORKS 3D Interconnect now supports JT, STEP, IGES, and ACIS file formats. Contents JT Files SOLIDWORKS 3D Interconnect supports JT files. STEP, IGES, and ACIS Files SOLIDWORKS 3D Interconnect supports STEP, IGES, and ACIS file formats. Parent topicSOLIDWORKS 3D Interconnect Related concepts Additional Information Supported for Reading from Third-Party Native CAD Files