The basic concept of intalgio printmaking is the process of making incisions
and texture into a printable surface (in this case, a copper plate) which will
eventually hold ink for printing.
It's the opposite of woodblock - where you cut away the things you don't want
printed. With intaglio, what you incise/etch/engrave is what you get.
In this short video, I engrave into the copper surface with a burin. The incisions
in the plate hold ink that I spread across the surface. Once the plate has been
sufficiently wiped of excess ink it is ready to print.
A dampened sheet of paper (dampened to soften the fibers) is laid over the
plate and everything is run through a press. The pressure that is applied forces
the paper to receive the ink and so the image is transferred.