If you have a metal sheet that you really want to customize but don't have the budget or experience to etch, there is a way to print on them without spending a fortune. In fact, you can print on metal sheets by using a simple template screening method that applies your design efficiently for a surefire professional look every time.
Draw out the design you want to print on your metal sheets onto your poster board. Cut the poster board to be the same shape of your metal sheet but 0.25 inches larger in size.
Cut the design out using a sharp craft knife. The goal is to remove the design from the poster board to make a template that can be reused.
Clean the metal sheet you will be printing on. Remove any dust or dirt it may have on the surface. Attach the poster board template to the metal sheet using painter's tape. The template needs to be tight and secure.
Dip the edge of your sponge into acrylic paint. Dab the excess off onto a piece of scrap poster board. Apply the paint to the template, focusing on the cutout sections of the design. For sharp corners or fine design elements the sponge can't get to effectively, use a detail brush instead.
Remove the painter's tape and lift the poster board template up and away from the metal sheet. Allow the paint to completely dry to the touch before using the metal sheet or adding further colors.