Hi Brian,

Thank you for your input.

Ok thats clear now, I wasnt sure which of your scripts to use.

The original obj was created with this prog
https://people.eecs.berkeley.edu/~sequin/SCULPTS/scherk.html
Great functionality to interactively twist and bend all kind of Scherk towers

I transformed the file generated there into an obj, imported it into MOI
and built uo the curves manually expecting to find a way to create surfaces
out of them,