skp and the autoSave save the project file as. SketchUp saves each model project file with the file extension. It is a must for most of the people engaged in 3D design work. SketchUp is one of the most powerful tools to create, view and edit the 3D design for either PC users or Mac users. What’s wrong? I can’t find the file anywhere. I restarted my computer and did not find any SketchUp pop-up, asking me whether to use the AutoSave version. 'I worked on a file last week and forgot to save it.
