Doesn't the availability of relatively affordable home laser etching equipment might offer a sort of back up to actual machining pantographic work and opens it up to the amateur "pantographers" out there, as it will be easier to translate graphic files to pantographs? I see mostly ones with low energy lasers sold out there, but I did notice a few that supposedly, can etching metal surfaces.
Laser etching can never replace real pantographing as we know on bicycle components (Especially the special skills and talent that needs to go with it), but it might be an alternative that people can consider, if it does work.