This 2″ x 2″ plate was exposed on a NuArc 26-1K Mercury platemaker. I first exposed the aquatint screen with 10 exposure units which took about a minute. Then I exposed my test pattern with 25 exposure units. I developed in water for one minute with gentle abrasion from a paint brush. The plate was blotted and then dried with a hair dryer and then exposed one more time with 25 exposure units to fully harden the photopolymer.