Brass-plated items can develop tarnish, dirt, and grime over time that dulls their shiny surface. While abrasive metal polishes like Brasso work great for removing tarnish on solid brass pieces, brass-plated items require more care when cleaning due to their thin plating layer.
What is Brass Plating?
Brass plating refers to the process of applying a thin layer of brass onto the surface of another metal through electroplating. This gives the item a brass-like appearance and properties while using less of the more expensive brass material [1].
Common bases used for brass plating include steel, iron, copper, bronze, and zinc. The thickness of the plating layer can range from 0.2 to 2.0 mils (0.002 to 0.02 inches) [2].
Brass plating provides several benefits:
- Attractive gold/brass aesthetic at a lower cost than solid brass
- Enhanced corrosion resistance compared to steel
- Improved wear resistance
- Uniform and consistent coating appearance
- Ability to plate intricate or complex shapes
However, brass plating has some disadvantages as well:
- Plating layer is thin and can wear over time
- Excessive abrasion or cleaning can remove plating
- Plating adhesion can vary depending on base metal surface preparation
Is It Safe to Use Brasso on Brass-Plated Items?
Brasso is a popular metal polish containing mild abrasives designed to clean tarnish and restore shine on brass, copper, stainless steel, chrome, and other metals [3]. However, Brasso and other abrasive polishes should be used with care on brass-plated items.
The thin brass plating layer makes these items more delicate compared to solid brass pieces. Excessive scrubbing or pressure when polishing can gradually strip away the plating over time. The abrasives in Brasso can also scratch soft brass coatings if applied too vigorously.
However, when used properly, Brasso is generally safe for occasional, gentle cleaning of brass-plated objects. The key is to use a light touch and quick circular motions instead of heavy scrubbing [4]. Slowly polishing a small area first allows you to ensure the Brasso will not damage the plating.
It’s also important to hand wash the item when cleaning instead of using a dishwasher or other harsh chemicals that could deteriorate the plating over many cycles [4].
Step-by-Step Guide to Using Brasso on Brass-Plated Items
Follow these steps to safely clean brass-plated objects with Brasso metal polish:
Clean Item First
Before using Brasso, wash the brass-plated item with warm water and a mild detergent or soap using a soft cloth or sponge [5]. This initial cleaning helps remove any dirt, grime, or oils that could cause deeper abrasion damage during polishing.
Pay attention to textured surfaces and crevices where dirt can collect. Rinse thoroughly with clean water and dry completely with a soft towel.
Test Brasso on Small Area
Never apply Brasso directly to the entire surface of a brass-plated object right away. First, use a cotton swab or soft cloth to apply a small amount of Brasso to a hidden or inconspicuous spot [6].
Gently rub the area in a circular motion for 10-20 seconds using minimal pressure. Wipe off the Brasso and inspect the test spot for any damage to the plating. Look for signs of removal of the brass layer, scratches, discoloration, or a different appearance.
If the plating remains undamaged, then it should be safe to continue polishing the entire item. If you notice any issues, discontinue use of the Brasso as it is too abrasive for that particular brass coating.
Use a Soft Cloth
For polishing the item, apply some Brasso directly onto a clean, soft lint-free cloth rather than the metal itself [7]. Cotton cloths, microfiber cloths, or an old t-shirt work well. Avoid using paper towels or tissues that could scratch the plating.
Use a minimal amount of Brasso – a dime-sized drop is usually sufficient for a small object. Too much polish makes abrasion damage more likely.
Gently Polish in Circular Motions
With the Brasso-dampened cloth, gently rub the surface in small circular motions [8]. Apply only light pressure – enough to lightly buff and clean instead of vigorous scrubbing or grinding motions.
Work in patches, moving and turning the object to polish all areas. Let the mild abrasives in the Brasso do the work instead of excessive elbow grease.
Rinse and Dry Completely
After polishing, use a clean soft cloth dampened with water to wipe off any Brasso residue [9]. Ensure all traces of the polish are removed from the item’s surface. Remaining residue could continue abrading the plating.
Follow up by hand drying the item thoroughly with another clean, soft lint-free cloth. Allow the brass-plated object to air dry as well to prevent water spots.
Use Brasso Sparingly
Avoid over-polishing brass-plated items with Brasso, even if using the proper gentle technique [10]. The thin plating layer will gradually wear down over time with repeated exposure to abrasives. Use Brasso only occasionally as needed to restore shine and luster.
For routine cleaning in between Brasso polishing, use mild soap and water with soft cloths. Avoid dishwasher chemicals and cleaning products containing acids, bleach, or other harsh ingredients.
Signs of Brasso Damage on Brass Plating
When examining your brass-plated item after polishing, look for these signs of plating damage from improper Brasso cleaning:
- Visible scratches on surface from excessive abrasion
- Areas of plating missing, exposing base metal underneath
- Brassy color replaced with different metallic color where plating removed
- Discolored or tarnished areas
- Pitted, etched, or grooved texture
- Loose, bubbling, or peeling plating
If you notice any of these warning signs, immediately stop using Brasso on the item to prevent further plating loss.
Best Practices When Using Brasso on Brass Plating
Follow these best practices to keep your brass-plated objects looking their best when using Brasso metal polish:
- Test Brasso on small hidden area first
- Use minimal pressure and gentle circular motions
- Avoid wetting surface – apply Brasso to cloth instead
- Use very small amounts of Brasso
- Thoroughly rinse off all residue after polishing
- Only use Brasso occasionally, not for daily cleaning
- Hand wash with mild detergent instead of dishwasher
- Dry immediately with soft cloth after rinsing
- Inspect for plating damage after each use
- Discontinue Brasso if any signs of damage seen
Restoring Damaged Brass Plating
If you notice brass plating damage from prior improper Brasso cleaning, all may not be lost. Light damage can sometimes be restored by electroplating or re-plating the item [11].
Professional plating shops can plate a thin brass layer over your item again to mask scratches or worn areas in the original plating. This restores the uniform brass appearance.
For small damaged areas, DIY brass plating kits are also available. These use electroplating at home to “touch up” the existing plating. However, achieving an even finish can be tricky without professional equipment.
Maintaining the Brass Plating’s Beauty
Brass-plated items can provide an attractive, brilliant accent in your home when cared for properly. Follow this guide when using Brasso metal polish to clean and shine brass-plated objects without ruining their delicate finish. With gentle polishing and hand washing, you can safely keep brass plating gleaming beautifully for years.
References
[1] Lawrence, J., Edwards, A., & Karlsson, E. (2022). Electroplating and electroless plating. Bloomsbury Visual Arts.
[2] Bluni, M. (2000). Cleaning and Preserving Brass & Copper. Conserve O Gram, 14/4. National Park Service.
[3] Reeves & Son Brasso. (n.d.). Brasso Metal Polish FAQ. Retrieved from https://www.brasso.co.uk/faq
[4] Brown, J. (2017, November 29). How to Clean Brass without Removing the Finish. Retrieved from https://www.bhg.com/homekeeping/house-cleaning/surface/how-to-clean-brass/
[5] Mills, C. (2020, September 15). How to Clean and Polish Brass. Retrieved from https://www.thespruce.com/clean-and-polish-brass-1900077
[6] Gold Coast Brass & Restoration. (n.d.). Cleaning and Polishing Brass Plated Items. Retrieved from https://www.goldcoastbrassrestoration.com/cleaning-and-polishing-brass-plated-items/
[7] Riungu, F. (2021, October 13). How to Clean Brass Without Removing the Finish. Retrieved from https://prudentreviews.com/how-to-clean-brass-without-removing-the-finish/
[8] Lee, S. (2006). The Care of Brass & Copper Alloys. Conserve O Gram, 19/6. National Park Service.
[9] Blais, J. (2020, August 31). How to Clean Brass Without Ruining It. Retrieved from https://www.bobvila.com/articles/how-to-clean-brass/
[10] Ashford, K. (2021, June 29). How to Clean and Polish Brass. Retrieved from https://www.goodhousekeeping.com/home/cleaning/a37462/how-to-clean-brass/
[11] Caswell Inc. (n.d.). Brass & Copper Plating Services. Retrieved from https://www.caswellplating.com/electroplating-anodizing/brass-copper-plating.htm
