Create multiple copies of same board without serializing part numbers.
- Turn on all layers
- Run ULP -> panelize
- Type “group all”
- Click “copy”
- File -> New -> Board
- Paste (must use the button)
Note: Eagle limits board size to 80×100
Ref: https://www.youtube.com/watch?v=_HfpNG-Zk90&feature=youtu.be