Photo-etching
is a process involving the transfer of a photographic image onto a special
film, using a photocopier. The toner on the film is transferred onto a
sheet of metal by burnishing on a hot-plate. The metal is then acid
etched with the transferred toner acting as a resist. A patina is applied
to the etched metal to further enhance the graphic image. Sometimes the
image is etched in reverse on a plate that can be used as an embossment
plate to create multiple images using a rolling mill ….kind of like
"printing" into metal
