Photopolymer Film At Wharepuke I use ImagOn HD photopolymer film. 1. Plate Preparation – Prepare the plate by filing edges, sanding the plate with carborundum and de-greasing with soy sauce and whiting powder.  Rinse and keep the plate wet. 2. Cut the film to size allowing a small margin all around the plate. Do this … Continue reading Photopolymer film