Cool scripts !

@ Phiro
You don't want a selection of a loop edges one out of two ? Or i dreamed again ? :)

PS You have also Construct / Curve / Silhou who can give some interesting results! ;)
(just very few edges/points to erase /Add for have a complete loop)
with your file

http://www.entrelacs.net/-Celtic-Knotwork-The-ultimate- tutorial :)

@Phiro
Very cool prog the Hypatia onLine ! :)

Save as stl : Mesh mixer --> OBJ

Import in Moi by Native SUBD / Create from File or _importOBJ by Max SMirnov

http://moi3d.com/forum/index.php?webtag=MOI&msg=8665.195
_ExpandSelectionTangecy