Yupo. A rather silly name for, as I found out today, a rather marvelous surface. I had never worked on Yupo before, so I began in my usual manner of applying somewhat thick acrylic. That's not the way to get the best out of this silky surface. It became clear rather quickly that the optimum application was thin and very fluid, letting the paint glide and meander over the slick surface on it's own, mixing and mingling on it's way. Since the Yupo is non-absorbent, the acrylic stayed wet a long time. The smooth and slick surface belies the fact that this is also a pretty tough substrate, taking lots of water without buckling.
Watercolors would also be fabulous on this surface. Once again, something I probably would not have tried if not for this challenge.