Things You'll Need
Instructions
Open the can of Nevr-Dull. Inside is cotton wadding polish. Tear off a bit of the wadding.
Rub the wadding over the metal image on the letterpress block. Once the wadding is dirty, replace it with a new bit of wadding.
Use a clean rag to wipe away any polish residue. This will also help determine how much more polishing the letterpress needs.