unshred layer

[Ofnuts]

@OP:

• My ofn-tiles and ofn-layer-tiles scripts (same download page)
  • take a layer and cut it in regular tiles (the fist saves them to disk, the second make individual layers),
    
  • take a bunch of tiles (from disk or existing layers), and arrange them into a single layer
    
  this can be a better match for you.
  
• If objects shapes and dimensions are irregular, then the ofn-extract-objects script can also help.