This verb for an artistic process applying acid to metal comes from the Dutch, & many Dutch masters were good at it
[DOC] [TLE] Art Colours: Glossary of Terms - Visual Arts Encyclopedia [PAR] Colour Glossary, Art Terms, Definition, Meaning: Colourist Theory, Artist ... From 
this word comes the name for a range of paints introduced by Winsor and ... 
Renaissance term describing the art of applying colour to paintings and 
sculptures.