When it comes to using a metal sheet patch for repairing metal objects, especially in more substantial repairs, you need materials that are strong, durable, and compatible with the type of metal you're working with. Using a piece of the same type of sheet metal as the object being repaired is often the best choice. You can cut and shape the sheet metal to fit the damaged area, then weld, rivet, or bolt it in place for a strong and permanent repair. Grade 304 Stainless steel is highly corrosion-resistant and can be an excellent choice for repairing metal objects exposed to moisture or corrosive environments. Remember that proper surface preparation, cleaning, and ensuring a good fit are crucial for successful metal repairs. Depending on the complexity of the repair, you might consider seeking assistance from professionals who have experience with metalworking and repairs, especially if the repair involves structural integrity or safety concerns.