Instance On Boundary Corners

Instance On Boundary Corners — Procedural Geometry Node Group
Simplify your procedural environment design and architectural modeling in Blender with the Instance On Boundary Corners geometry node group.
This tool allows you to automatically detect the outer boundary corners of a mesh grid or curve setup and place object instances—such as pillars, fence posts, or support columns—exactly where edge angles change.

Angle Threshold Control: Automatically places instances on boundary points using an adjustable "less than or equal to" angle threshold.
Procedural Placement: Perfectly aligns pillars, posts, or architectural supports to mesh boundaries without manual vertex selection.
Non-Destructive Workflow: Easily tweak your base geometry or angle parameters in real time while keeping all instanced objects in place.
Ideal for Environments: Perfect for creating procedural fences, building foundations, ruins, modular structures, and grid-based level designs.