Hi, I'm trying to construct a solid similar to the SubD box (left in 1st image) from several closed curves (right in 1st image).
I've tried Network and Sweep, but they gave weird results (2nd & 3rd images). Am I doing anything wrong here?
I have attached the 3dm file below in case someone wants to try.

A possible way is Rail revolve.

If you prefer Networking, you have to separate curves, it seems.
You do it with 2 networks

Like this :

Hi tuananhnp, for Network to work it needs to be able to unwrap the curves into a regular grid similar to latitude and longitude lines on a sphere going to a flat world map.

The part that doesn't work in your current setup is you're missing the "poles" where longitude lines should end at a common point.

In the attached version I have split up 2 of your closed curves so that there are poles and so they can make a 2D grid and now Network should work.

You may get a better result though using an actual SubD box and using the SubD converter under SubD > Create > "From file".

- Michael

Some funny results with the same curves and the Boolean Intersection in some steps! ;)
Results are depending of the order of them!

Thank you guys for those solutions!

Network to work it needs to be able to unwrap the curves into a regular grid similar to latitude and longitude lines on a sphere going to a flat world map. https://get-vidmate.com/index/ https://instasave.onl/saveinsta/