Creo ModelCHECK > checks > SRF_EDGES (Surface Gaps and Overlaps)
  
SRF_EDGES (Surface Gaps and Overlaps)
Y/N/E/W
Lists the edges with either gaps or overlaps between the surfaces that meet. If any are found, you can highlight the features in question in the Creo Parametric window.
You can also access the Global Reference Viewer from the Creo ModelCHECK report to view all references to and from the reported features.
This check takes a relatively long time. If you are concerned about speed, turn it off.
Suggested Settings:
Inter
Batch
Regen
Save
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E
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