Holbein etching card is a convenient way of achieving etching results without the use of acid.
Simply carve a design into the card with a sharp implement like a scribe or scraperboard
tools and then ink up and place through a press. Due to the extremely shallow nature of the
etch, be careful to not wipe away too much excess ink out of the carved areas, as it is very
easy to wipe back too much and leave nothing left to print.