IM,
Re: the engraving process. A year ago the CSMC guys told me it
was going to be photo-chemically etched, commonly done on factory guns like Citoris. Process steps from a web page:
  • Generate artwork on mylar from Mech-Tronics in-house CAD/CAM system or customer supplied data.
  • Clean and pre-treat the material.
  • Apply 1.5 mil dry PHOTO RESIST (photographically resistant) mylar layered film to the metal sheet to be etched.
  • Expose the film via UV (Ultraviolet) light to transfer the piece part photographically to the previously treated sheet of metal.
  • Develop the metal sheet thereby exposing the piece part image.
  • Chemically remove the unprotected material areas by etching.
  • Rinse and strip the photographically resistant film from the sheet.
  • Proceed to next steps of manufacturing operations