Drawing Inks and Calligraphy Inks have very similar qualities, but they perform vastly differently over time. To demonstrate, we pipette colours from both ranges onto wet watercolour paper to show how they behave similarly when wet and dry. Then we mask the lower half of the paper and place them in a machine which replicates the effects of light energy in normal gallery conditions over a period of 50 – 100 years. See the result. #WNMasterclass