Navisworks is a native file of Navisworks® project review software by Autodesk.
Navisworks files come in three formats: NWD, NWF, and NWC. An NWD is a single file that contains all model geometry, environment, viewpoints, and review markups. An NWF file is a list of links to the original files. It doesn't keep model geometry and, to be opened, requires access to the original CAD files. An NWC is a cache file created from any native CAD or laser scan files, when opened in Navisworks.
A SAT file is a 3D model used in ACIS CAD modeling software by Spatial Corporation.
The format's name stands for Standard ACIS Text, since the content of a SAT file is stored as ASCII text. In ACIS, the same data can also be saved in binary form with SAB extension.
SAT files are used to communicate 3D data across different 3D CAD tools, such as Spatial 3D ACIS Modeler, Autodesk AutoCAD 2017, IMSI TurboCAD Pro 2016, Dassault Systèmes SOLIDWORKS, etc.
A CAD file is an output of a CAD software, containing key information about the designed object: its geometry and topology representation, 3D model hierarchy, metadata, and visual attributes depending on the format of the file.
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