How to Remove Rust From a Cast-Iron Grinder

How to Remove Rust From a Cast-Iron Grinder
Written By
Darla Ferrara
Darla Ferrara
Published: Jan 5, 2011
Updated: Nov 20, 2021
2 minute read

Once disassembled, you find many internal components, such as a grinding disc and turning screw. These pieces are responsible for mincing food. The best way to avoid rust on your cast-iron grinder is through proper cleaning. Once the rust forms, a little elbow grease will strip it off.

Things You Will Need

  • Screwdriver
  • Dish soap
  • Old towel
  • Wire brush
  • Steel wool or mesh pad
  • Pipe cleaner or plastic stirrer
  • Clean hand towel
  • Spray-on cooking oil
  1. Take the grinder apart. The method will depend on the style grinder. Look for butterfly nuts or screws that will free the plate and release the components.

  2. Soak all parts in a sink full of hot, soapy water. Use a mild detergent, such as dish soap. Leave the parts in the sink for 30 minutes. This will remove some of the surface rust.

  3. Remove the grinder parts from the sink and hand-dry them with a clean, old towel. There will still be rust on the metal that will stain the towel. Use something you don’t mind ruining to dry the pieces.

  4. Scrub the surface of the metal with a wire brush. If you have a wire attachment for your drill, it will work as well. Set the tool at a low speed to avoid scratching and damaging the surface. Run the wire from the brush or tool over each component until all remaining rust comes off.

  5. Clean the components with a mesh or steel wood pad under running water. Poke holes in the grinder disc with a stirrer or pipe cleanser to loosen embedded dirt and rust.

  6. Wash the components in soapy water and dry thoroughly with a clean towel.

  7. Apply a thin coat of spray-on oil to each piece before reassembling the grinder. This will protect the metal surfaces from future rusting.

The Drip Cap

  • Cast iron is malleable metal and part of a group known as ferrous alloys.
  • The best way to avoid rust on your cast-iron grinder is through proper cleaning.
  • Look for butterfly nuts or screws that will free the plate and release the components.
  • This will remove some of the surface rust.
  • Run the wire from the brush or tool over each component until all remaining rust comes off.
  • Clean the components with a mesh or steel wood pad under running water.

Photo Credits

Digital Vision./Digital Vision/Getty Images

Digital Vision./Digital Vision/Getty Images

Darla Ferrara

Writing since 1999, Darla Ferrara is an award-winning author who specializes in health, diet, fitness and computer technology. She has been published in "Mezzo Magazine" and Diet Spotlight, as well as various online magazines. Ferrara…

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