Mesh/boolean issues

hey,
having a really stressdul time here
this is a subd object, and when i boolean difference on some parts, it bahaves like a union.

the object does not have any naked edges / non manifold edges, but when i mesh it it does this

BUT when the inside wall is deleted form the sub d object, the mesh shows whole

i definitately need that inside wall, and i’ve tried various methods to add it in again, to no avail

i’ve also converted it into nurbs and done the whole process, with the same results.

Could you share this 3dm file before booleaning ?

hi,

thanks for the reply, i’ve actually figured out the issue - although im still not sure what it is exactly

on the subd surface, these faces looked different to all the other faces - almost like a matte suface?

so i deleted each row by row and rebuit them using bridge. this solved the it, but im not sure how as it did not have naked edges.

Please try to use RemoveCrease to fix it,

i tried that numerous times, had no crease. even tried creating a crease just to remove it

Please share you 3dm file here, thanks.

curvedring.3dm (15.0 MB)

Please try to unify the normal of the Subd object following below discuss

amazing thank you