Cleaning cast iron hardware, such as handles, knobs, or hinges, follows similar principles to cleaning cast iron cookware. Here's a step-by-step guide on how to clean cast iron hardware:

Materials Needed:

  1. Mild dish soap
  2. Water
  3. Soft brush or sponge
  4. Soft cloth or paper towels
  5. Coarse salt (optional)
  6. Cooking oil (vegetable oil, canola oil, or any oil with a high smoke point)


  1. Remove Hardware (if possible):

    • If the cast iron hardware is detachable, consider removing it for easier cleaning.
  2. Rinse with Warm Water:

    • Rinse the cast iron hardware under warm water to remove any loose dirt or debris. Use a soft brush or sponge to scrub gently.
  3. Use Mild Dish Soap:

    • If the hardware is particularly dirty, you can use a mild dish soap. Apply a small amount to a soft brush or sponge and scrub the surface.
  4. Scrub Stubborn Spots (Optional):

    • For stubborn spots or rust, you can make a paste using coarse salt and water. Apply the paste to the affected areas and scrub gently with a soft brush or sponge.
  5. Rinse Thoroughly:

    • Rinse the cast iron hardware thoroughly with clean water to remove any soap or salt residue.
  6. Dry Completely:

    • Dry the hardware completely with a soft cloth or paper towels. Make sure there is no moisture left on the surface to prevent rust.
  7. Reassemble (if applicable):

    • If you removed the hardware, reattach it to its original location.
  8. Apply a Thin Coat of Oil (Optional):

    • To prevent future rusting, you can apply a thin coat of oil to the cast iron surface. Use a soft cloth to spread a small amount of cooking oil (vegetable oil or similar) over the hardware. Wipe off any excess.
  9. Regular Maintenance:

    • Periodically inspect and clean the cast iron hardware to prevent the buildup of dirt and to maintain its appearance.
  10. Store Properly:

    • If storing the hardware, ensure it is kept in a dry place and is not exposed to excessive moisture.


  • Avoid using abrasive cleaners or scouring pads, as they can scratch the cast iron surface.
  • If the hardware is decorative and not functional, you may want to consult with the manufacturer or a professional for specific cleaning recommendations.

Regular cleaning and maintenance will help preserve the appearance and functionality of cast iron hardware. If rust develops, you can address it by gently scrubbing with a mixture of equal parts water and white vinegar and then applying oil to prevent further rusting.