Creo Flexible Modeling > Patterning Creo Flexible Modeling Geometry > About Attachment in Creo Flexible Modeling Patterns
  
About Attachment in Creo Flexible Modeling Patterns
Attachment options help you to create a pattern even on irregular surfaces where the surfaces to which the pattern instances attach are not identical. These options are located on the Attachment tab of the Flexible Pattern and Pattern Recognition tabs. You can select either or both of the options.
Attach pattern members
To attach all pattern members to the model geometry, select this check box. If the pattern leader was originally attached to the model and this option is not selected, then the pattern leader will become detached. If detaching the pattern leader creates a gap that cannot be closed, the flexible pattern feature will fail.
When the Attach pattern members check box is not selected, the resulting geometry is a quilt. The appearance of the original solid surfaces is propagated to both sides of the resulting quilt.
Create rounds/chamfers
To attach all pattern members to the model geometry with rounds or chamfers of the same type and dimensions as the pattern leader, select the Create rounds/chamfers check box. If the pattern leader was originally attached to the model with round or chamfer geometry and this option is not selected, then the rounds or chamfers that attach the geometry of the pattern leader to the model will be removed.