Best approach for complex geometrical pattern/shape on curved surface

Hi everyone,

I am working on a project that requires a wavy, geometric relief pattern applied to a curved surface (panel), intended for Compression Molding part. I want to achieve a surface similar to the reference attached, where two or three sets of waves intersect seamlessly.

Constraints:

No sharp edges: Every intersection and ridge must have a smooth blend or fillet.

The result needs high surface quality for mold machining, proper draft angles, and a constant part thickness.

What I’ve tried so far:

Grasshopper: I’ve tried several approaches, but I’m struggling to achieve high surface quality and precise control over the intersections.

Manual Modeling: I attempted to model the waves and blend them manually, but the complexity of the intersections on a curved base made it nearly impossible to keep the surface patches clean and closed.

Given the precision required for mold machining and constant part thickness, how would you personally approach a project like this from scratch to ensure both geometric accuracy and surface smoothness?

Once you have all your wavy “ridge” curves, maybe you could try just building simple degree 2 or 3 surfaces, pull all of their centre CVs down together to the same depth, and then fillet. Then you have good quality NURBS surfaces for subsequent CNC-machining.

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