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FilmSkool — a free film school

Here is the powerful curvature formula.

Explains a curvature-based shader setup that detects convex and concave edges on a mesh, useful for adding wear, dirt or highlight effects without hand-painting masks. A reusable node group for any hard-surface material.

CGMatter · 5 min · Intermediate · VFX · VFX · 2026

What you take away

Build a curvature mask from a shader node setup to drive edge wear automatically

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