Well... on our testwikis.
We still have to work out a few details before enabling 3D support on Commons, but this is a major step towards getting there.
Mark just[1] uploaded[2] the 2 first STL files to these testwikis. Please help us test and file a bug[3] if you experience issues.
Thanks to everyone involved in making this work!
Matthias
1: https://test.wikipedia.org/wiki/File:Programmatically_created_crystal.stl https://test.wikipedia.org/wiki/File:Programmatically_created_crystal.stl 2: https://test2.wikipedia.org/wiki/File:Programmatically_created_crystal.stl https://test2.wikipedia.org/wiki/File:Programmatically_created_crystal.stl 3: https://phabricator.wikimedia.org/maniphest/task/edit/form/1/?projects=3D https://phabricator.wikimedia.org/maniphest/task/edit/form/1/?projects=3D