This script was actually intendet to make it easier for reconstrukting parts where you only have a stl file.

This is the normal workflow:

After importing a (simple) stl it looks like this:



If the conversion to a solid was successful you can "clean flat surfaces" and it looks like this:


Select all polylines which should be redraw as nurbs:


After clicking "done" it presents you every polyline and you choose "Circle or Curve" to redraw it.( "Line" would make a straight line with only 2 points if it had more points before):


Than it looks like this:


After some lofting and connecting you get a solid


Cut out the holes, and VOILA:


Bigger STLs can crash MOI or need a long time...