As an amateur sailor I beg to differ. First, you can tie knots with steel wire, too. Second, I would be much more comfortable hanging artwork on a thin twine

As an amateur sailor I beg to differ. First, you can tie knots with steel wire, too. Second, I would be much more comfortable hanging artwork on a thin twine than on steel wire. Steel wire tends to be sharp and scratch and punch holes in anything it gets into contact with. Rope that will be durable and can withstand the stress of hanging 30kg artwork is still very thin. Just google it and be surprised. (https://www.ingersollrand.com/pt-la/lifting-equipment-material-handling/Support/winch-selection-support/wire-rope-selection.html https://www.ingersollrand.com/pt-la/lifting-equipment-materi...)