Hi there,
I´m trying to sweep2 something in Rhino 7.
However when I try to offset the surface, it it shows me that two sets of the surface normals are inverted. Does anyone know why and how to fix it?
I have checked my sections and rails directions and they seem okay. I tried sweeping it in different orders tried in in gh but to no avail.
please help 
Endgoal is to offset the srf and creat a soild ( closed polysrf)
My temporary fix is to trun the srf into a mesh and work with that however one loses a lot of deatil ( roundnes of the objekt, yes you can later on do subD, however that isnt as accurate). I`m definetly not satisfied with the work around, maybe someone else has a better idea. If you do please let me know.
Hi William, I do not see the flipped normals in the file you posted- but I do see the rail curves are quite messy - small segments, non-tangent segments etc - that will make the resulting sweep more complicated and messier than it needs to be.
e.g.
-Pascal
Hi William,
If you explode the surface you find quite different constructs each side of the flipped normal area, while the flipped normals are on a thin sliver of a surface that is folded back on itself:
This has arisen because the rail isn’t smooth.
HTH
Jeremy
Thank you Jeremey and Pascal,
I have cleaned up my Rails and made shure everysingle curve is obj. tangable to the following one and it works. So in the future I will work cleaner.
The Offset of the enteire srf. didnt work. However when I explode the polysrf. into surfaces it works just fine.
Working sweep.3dm (367.7 KB).
Thanks
Sheldon
