How to Remove Rust With Electrolysis

Electrolysis is a technique used in the removal of rust from metal (iron or stainless steel) parts. It involves a low voltage current and an electrolyte solution. It's effective in loosening and removing surface rust. The process is simple and safe to use, and it won’t damage other metal parts.

Things You'll Need

• Screwdriver
• Rusted item
• Electrode
• Bucket
• Water
• Baking soda
• Scotch-Brite pad
• Sandpaper

Instructions

1. Clean the rusted metal item. Use a metal tool such as screwdriver to remove chunks of rust if necessary. Afterward, use a wire brush to remove any loose particles of rust.

2. Wash the rusted item with warm soapy water. Remove any excess dirt and grease or oil. Otherwise, the process won’t work effectively.

3. Find a piece of ferrous metal (iron or stainless steel) to use as an electrode. Hook the electrode to the charger’s red lead. Connect the rusted item to the black lead.

4. Pour 5 gallons of water in a plastic bucket. Add approximately 1 cup of baking soda. You may use washing soda in place of the baking soda if you prefer.

5. Position the electrode and the rusted item so that they hang over the bucket while submerged in the water. Make sure that they don’t touch each other.

6. Plug in the charger and let it run for approximately 3 hours. You’ll notice a fizzling effect, which means that the process is working properly. Take the metal piece out of the bucket once you’re satisfied with the condition. Electrolysis turns an item a grayish-black color.

7. Scrub the metal piece Scotch-Brite pad to remove any lingering rust particles. You may use a wire brush if you prefer. Sand the item to remove the dullness and grayish color.

Tips & Warnings

• This process only works on iron and steel. Remove any brass, bronze and wood to avoid damage.