Invalid brep problem

Hi everyone,
I subtracted multiple circular surfaces from the surface and
it showed “invalid bodies”.
Is there a way to make him a "open brep " ?
invalid brep.3dm (656.7 KB) why Invalid (336.1 KB)

Use the TRIM SOLID component, that will do the job. Its under Intersect - Shape - Trim Solid. The Solid Difference component would work if both of them were closed solids.

See the attached script for the difference.

why Invalid (673.6 KB)

thank u.

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