All my works are made on metal plates mounted around a wooden board. Mostly copper and brass plates but also zinc, iron and new silver. To develop motives I cover the metal surface with self-adhesive plastic film and cut out where I need the metal to change colour.
For developing colour I use different kinds of acids that all oxidises the metal in different ways. The result varies from time to time and the same mixture of acids can develop many different colour combinations, depending on various factors, like humidity, the metal alloy, temperature – and others I am still to uncover. The process is long and very unpredictable. Some acids works right away and some has to lay for at least a couple of weeks.
What especially intrigues me as an artist about working with metal is that I can ‘paint’ without adding colour. The works only consist of the metal itself!
The works will change over time due to the natural oxidation process. I treat some parts of the copper with lacquer to prevent further oxidation, while other parts will keep changing.