Depending on the project, I use a variety of software for modeling for both my woodworking and 3D printing hobbies. I often bounce between Sketchup Web and OnShape. I recently downloaded a 3D model STL file and was looking for a way to modify it. As you may know, STL files do not play well with most modeling softwares. But I came across a YouTube video with a couple Sketchup extensions that will cleanup the geometry (CleanUp3) and create/fix faces as needed (Eneroth Face Creator).

The problem arises in that you can not use extensions in the Sketchup Web version, only in the desktop versions.

I used to have the free version of Sketchup on my desktop, but it has since been uninstalled. But now it doesn't look like it is offered any longer. I think they have abandoned it.

So, I guess, 2 part question here...1 - does a free desktop version of Sketchup still exist? and 2 - if not, I assume it is still not possible to use extensions on the web version (if there is I cannot figure out a way to do it)?

TIA!