Künste would be the proper plural, as in this context "Kunst" doesn't mean a wor...

flohofwoe on Dec 30, 2014 | parent | context | favorite | on: The Mechanical Transmission of Power: Stangenkunst

Künste would be the proper plural, as in this context "Kunst" doesn't mean a work-of-art, but it is an old meaning mostly used in mining, roughly 'machinery' or 'devices': http://de.wikipedia.org/wiki/Bergm%C3%A4nnische_Kunst