To Copy a Mill Volume
1. Select the volume and the features that you want to copy from the Model Tree.
2. Click > 
Copy to copy the volume.
Copy to copy the volume.3. Click > 
Paste. The feature creation tool of the original feature opens.
Paste. The feature creation tool of the original feature opens.The Copy option is especially instrumental in Creo NC, as it allows you to reference the geometry of the design model.