All my lofted surfaces offset in different directions

I tried to offset my lofted surfaces, but they get offset in x and -x directions. How do I make the direction consistent, as the offset surface component has no direction input

Use Dir to see the directions of your surfaces and line them up.

It’s some 250 surfaces. I can’t line them up

If there is some consistent rule to how to determine which way is “up” relative to the normal direction sampled somewhere consistent then there may be some Grasshopper thing or a script to unify them. But only 250 surfaces? Not really worth the effort, just take 5 or 10 minutes and do it…I mean you made 250 lofts in the first place right? Or use the Bothsides option in offsetSrf instead.

Rhino does not magically know which way is ‘out’ on an open object, it uses the surface UV directions to get a normal and that’s gonna depend on all sorts of details of the input.

If there was a way to re-loft them all as one object to be exploded, I’ve done that before, but that’s only going to work in a specific situation.