Creo NC Sheetmetal > Contouring NC Sequences > Reference Patterns
  
Reference Patterns
You can create a reference manufacturing pattern when the NC sequence to be patterned references a patterned feature.
NC sequences with a sketched cut section may be Reference patterned only if the section sketch for the NC sequence is created with Use Edge and references edges of a patterned feature.
After you pattern an NC sequence (using either pattern type), an Automatic material removal feature based on it can be reference patterned.