why my autodesk inventor files are not preview in this site
2 Answer
Nothing you are doing wrong. GrabCAD does not offer a preview of Inventor files.
Best to leave Inventor files off the gallery view. Just create some simple renderings and also use some STEP files.
Regardless of the CAD system used, it's a good idea to include renderings of your model. GrabCAD may take hours or even days to render some CAD files. In addition, GrabCAD doesn't always remain compatible with the latest CAD program releases.