To minimize or prevent iron nails from rusting, there are several methods that can be used. Here are some ways to prevent rusting:

1. Coat it with oil or grease: Applying oil or grease forms a protective layer over iron, just as paint does, and therefore prevents rust formation.

2. Paint it: Painting the metal with any durable acrylic paint can prevent rust formation. However, it is important to avoid using water-soluble paints, as they will only worsen the rust. Rust can form underneath this type of paint.

3. Keep moisture at bay: Avoid contact with water or moisture. Water has a chemical formula that corresponds to 2 parts hydrogen and 1 part oxygen. Oxygen is responsible for oxidation of iron and therefore forms rust.

4. Apply a protective coating: Coating the nails with paint, oil, or grease creates a barrier between the iron and the air, preventing the formation of rust.

5. Use galvanized nails: Galvanized nails last longer than coated nails because they are coated with a layer of zinc, which prevents rust formation.

In conclusion, to prevent iron nails from rusting, it is important to keep them dry and apply a protective coating such as oil, grease, or paint. Galvanized nails are also a good option as they are coated with a layer of zinc.