Is your UART paper curling? I bet you the answer is yes. Curling is unfortunately a natural occurence for all true sanded papers. Sanded paper is extremely susceptible to its environment and will not perform well in very dry or very humid conditions. It will curl in a convex way in dry conditions and concave in high humidity. The best way to prevent a piece of sanded paper from curling is to make sure the relative humidity levels are between 40% and 60% and to top it with weighted objects to keep it flat. But what if your piece has already curled? In this video, Bethany Fields is giving you her two cents…