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• "4+ facets" limitation:

  • "4+" facet is a facet with 4 or more vertexes (junctions are the most common reason for the triangle facets to become "4+").
    

  • Goodwin checks every vertex of the model.
    

  • At each vertex, only 3 or fewer "4+" facets should converge.
    

    Note
    Table, culet, and facets of the girdle are not taken into account.

    See the Example below.

    
    

• Facet types should types should not have serious errors (like some of the facets on the pavilion marked as the crown facets).

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1. To solve the 4+ vertexes problem, try running Smart Normalize. If this does not help:
2. Check facet types of your model.

Example

Here is an example:

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