In 2020 I started to learn the technique of etching.

Etching is traditionally the process of using strong acid or mordant to cut into the unprotected parts of a metal surface to create a design in intaglio (incised) in the metal. (Wikipedia)

I am a member at Grafisch Atelier Minnigh in Rotterdam and sinds the beginning of 2024 also a member of its board.
If you are interested in learning the technique of etching, feel free to contact me to discus the possibilities of a (group)workshop.