A few years ago Github courted the 3D printing crowd by offering a 3D model viewer to see STL files, and then added a feature to visualize differences between revisions of STL files.
One of the reasons I put Sawppy STLs on Github is for people to see parts in their browser without having to install any software. I thought it would also be cool for people to see parts as they evolved. When I first started playing with putting STL files on Github, I thought this was a great way to track changes across major revisions.
Unfortunately, the revision visualization module seems to be gone. The 3D model viewer is still there so the primary motivation for putting STLs on Github is still good. But when I try to view file changes, the changes are no longer shown. The official help documentation still talks about the feature, it just doesn’t seem to work.
I liked seeing STL diffs visually and it makes me sad the feature is now inaccessible.