Steel Backed Photopolymer Plate - Medium
How to use Steel-Back Photopolymer Plates:
Mark and cut down your Photopolymer plate to your desired size. Remove the protective plastic UV covering on the plate before proceeding. Place your photo-negative transparency ink side down on top of your photopolymer plate and place between the frame back and acrylic top.
Exposure time for Steel-Backed Photopolymer Plates can vary depending on depth, design and details. For higher contrast black& white photo-negative designs, expose the plate for 15 minutes to your UV light. For a more detailed or grey-scale, more exposure (2-3 hours) may be required.
Washing Steel-Backed Photopolymer Plates:
After exposure is complete, use a sink or dishpan to wash your design. Using water and a soft brush hold the plate under the water and brush your design. The unexposed polymers will wash away. Continue to brush your design until the plate feels clean and the metal is exposed. Let your plate dry.