How To Clean Pitted Aluminum

How to Clean Pitted Aluminum: A Comprehensive Guide

Aluminum is a popular material for cookware and other household items due to its lightweight and non-reactive nature. However, over time, aluminum can develop pits and discoloration, affecting its appearance and functionality. This comprehensive guide will walk you through effective methods to clean pitted aluminum and restore its shine. We'll tackle the "how" and address the "why" behind the pitting, equipping you with the knowledge to prevent future damage.

Understanding Aluminum Pitting

Before diving into cleaning methods, it's crucial to understand why pitting occurs. Pitting is typically caused by corrosion, often accelerated by:

• Acidic Foods: Prolonged contact with acidic foods like tomatoes, citrus fruits, and vinegar can react with the aluminum, leading to pitting and discoloration.
• Harsh Cleaners: Using abrasive cleaners and scouring pads can scratch the surface, making it more susceptible to pitting and corrosion.
• Hard Water: Minerals in hard water can leave deposits on the aluminum surface, accelerating corrosion.
• Improper Cleaning: Leaving food residue on the aluminum for extended periods allows acids to react with the metal.

Effective Methods for Cleaning Pitted Aluminum

While completely removing deep pits is difficult, these methods can significantly improve the appearance and functionality of your pitted aluminum:

1. Baking Soda Paste: A Gentle Approach

Baking soda is a mild abrasive that's effective in removing surface stains and light pitting.

• Mix: Create a paste by combining baking soda with a small amount of water.
• Apply: Gently rub the paste onto the pitted aluminum using a soft cloth or sponge. Avoid using abrasive scrubbers.
• Rinse: Thoroughly rinse the aluminum with warm water and dry it completely.

2. Vinegar and Baking Soda Solution: For Stubborn Stains

This combination provides a more powerful cleaning action compared to baking soda alone.

• Combine: Mix equal parts white vinegar and water in a bowl.
• Soak: Submerge the pitted aluminum in the vinegar solution for 30-60 minutes.
• Scrub: After soaking, gently scrub the aluminum with a soft sponge and baking soda paste.
• Rinse: Rinse thoroughly and dry completely.

3. Aluminum Foil and Electrolysis: Tackling Deeper Pitting

This method is more advanced and requires caution. It's best suited for deeper pitting. Always wear protective gloves.

• Electrolysis Setup: This requires a container large enough to hold your aluminum item, a power supply (a car battery charger works), aluminum foil, baking soda, and water.
• Process: Refer to detailed online tutorials for precise instructions on setting up and safely performing electrolysis. It involves using the aluminum foil as a cathode and the pitted aluminum as an anode to remove the damaged surface.
• Caution: Electrolysis can remove substantial material; use it cautiously and only on items where significant pitting is acceptable to remove.

4. Commercial Aluminum Cleaners: A Convenient Option

Several commercial cleaners are specifically designed for aluminum. Always carefully follow the manufacturer's instructions and test it on an inconspicuous area first.

Prevention is Key: Maintaining Your Aluminum

Preventing pitting is far easier than removing it. Here are some crucial prevention tips:

• Clean Immediately: Don't let food residue sit on the aluminum for extended periods. Clean your aluminum cookware immediately after use.
• Use Non-Abrasive Cleaners: Avoid harsh chemicals and abrasive cleaners. Opt for gentle dish soap and soft sponges or cloths.
• Dry Thoroughly: Always dry your aluminum items completely to prevent water spots and corrosion.
• Avoid Acidic Foods: Minimize prolonged contact between acidic foods and your aluminum cookware.
• Use Protective Coatings: Consider using protective coatings designed for aluminum to help prevent corrosion.

By following these cleaning methods and preventative measures, you can effectively clean pitted aluminum and maintain its shine and functionality for years to come. Remember that severe pitting may require professional restoration.