Tuesday, May 09, 2017

Coffee lightfastness test

coffee lightfastness test

Here is the result of a light exposure test for drawing or painting with coffee. This ran from March 19 to May 8.  I was surprised that there was so little fading (the bottom half of this paper pictures was on my dashboard the whole time, and the top half was tucked inside my sketchbook).  I will keep it on my dashboard longer to see how much it changes.  But right now, I would consider coffee to be relatively lightfast...but I might have to revise that if it all just disappears, which I guess could still happen.

I am doing this because, for some reason, I just don't see anyone else testing this, even though I know some people use coffee for artwork.