About Trimming Quilts
You can trim quilts in several ways:
• By adding a cut or slot as you do to remove material from solid features
• By trimming the quilt at its intersection with another quilt or to its own silhouette edge as it appears in a certain view
• By filleting corners of the quilt
• By trimming along a datum curve lying on the quilt
For more information refer to the topic About the Trim Feature of the Part Modeling module of the Creo Help.