Edit: BorromeanSeifert .3dm of 6.5 MB deleted. No one downloaded it.

Uploaded borromean-seifert csv file of 193 kb.
EDIT: Deleted borromean-unorientableONE csv file of 191 kb, due to two missing triangles. Replaced with version TWO in later post.

Also uploaded the ImportTriangleFile script, which is a special purpose script to upload the two csv files above.
The files consist of vertexes of triangle corners. Each line is a vertex (x,y,z). Three sequential vertexes make a triangle.
So a lot of the vertexes are duplicates. The source files are very fast in WebGL memory. These two files are striped down.
There are no normals. The 3 boundary ellipse polylines are not included, but can be selected from the edges and re-created.

A modification of ImportPointFile script, with some LineWeb code grafted in, the ImportTriangleFile script is slow,
so it may have some incorrect code (?), but it works. ObjectList methods for the script were not successful, more study needed :-)
Please allow at lease 5 to 30 seconds after pushing the Done button, for the triangles to load, and for the script to close, on a fast computer.

Now to try saving in Moi as conventional obj files.

- Brian

Looks like the point import option is broken, but the points can be imported with the ImportPointFile script.
The points will have many duplicates...

EDIT: See post 8 for updated _ImportTrianglesCSV script.