How to Fix non manifold vertices/edges

Fixing non-manifold vertices and edges is a crucial part of using the Mesh Cleaner in CATIA V5 Digitized Shape Editor. Here's a detailed guide:

  1. Step 1: Apply Mesh Cleaner within Digitized Shape Editor

    3D model used as a case study available at:

    https://www.thingiverse.com/thing:6483718


    Identifying Non-Manifold Issues:

    Visual Inspection: Look for self-intersections, overlapping faces, or edges connected to more than two faces.

    Analysis Tools: Use the Analyze Mesh tool to identify non-manifold vertices and edges specifically.


    Fixing Non-Manifold Vertices:

    Automatic Fixes: Often, the automatic cleaning mode effectively removes most non-manifold vertices.

    Merge Vertices: This option combines close-proximity vertices, ensuring each vertex connects to exactly two edges.

    Delete Isolated Vertices: Removes stray vertices not connected to any edges.


    Fixing Non-Manifold Edges:

    Automatic Fixes: Try running the cleaner with automatic fixes first.

    Flip Edge Normal: This option reverses the direction of an edge if it's causing non-manifold issues.

    Split Edge: Divides a problematic edge into smaller, well-defined segments.

    Merge Edges: Combines neighboring edges if they overlap or form a sharp angle.

    Delete Isolated Edges: Removes edges not connected to any faces.


    Additional Tips:

    Adjust Tolerances: Experimenting with different tolerance values in the Mesh Cleaner Options can offer better results in specific cases.

    Combine Tools: Sometimes, a combination of different repair options is necessary to fix complex non-manifold issues.

    Preview Changes: Use the preview function in the Mesh Cleaner Options to visualize the impact of specific repairs before committing them.

    Review Results: After applying fixes, re-run the analyze mesh tool to ensure all non-manifold issues are resolved.

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