3 Tips On How To Polish Blackened And Oxidized Aluminum

Let’s take a look at the well-known and lesser-known methods of cleaning aluminum objects and keeping them in good condition by removing traces of oxide and natural blackening.

Aluminum is a metal characterized by a good ductility, a remarkable softness, lightness and high resistance to oxidation. Due to its requirements it is used for a wide range of applications and has become one of the most important materials in the world economy.

Its use is vital above all in the aeronautical industry, in the aerospace industry and in the transport production sector in general; but this metal is used to manufacture countless different products, from electronic devices to household appliances and cookware.


The kitchen, in fact, is one of the domestic environments where you can find the greatest concentration of objects made of aluminum: the oven, the refrigerator, the microwave, the blenders, the coffee machine, the pots and the moka pot, are all made with a more or less substantial percentage of this material.

Despite its characteristics of lightness and resistance, however, even this metal is subject to darken and stain with the passage of time and with frequent use, both with pots and with household appliances; as the opinions on the whirlpool 6 sense oven show regarding the blackening of the internal parts made of aluminum, just to give an example.

Its high resistance to oxidation, in fact, is consequential to the natural formation of a very thin layer of oxide on the exposed surfaces of the aluminum, which acts as an insulator and prevents oxygen from penetrating into the metal; even if the preservative oxide layer that forms on the surface is thin, however, over time it tends to become opaque and darken slowly.

Furthermore, depending on the type of object and the use to which it is intended, this material can undergo other types of wear that ruin its appearance and limit its functionality, therefore it is important to clean the aluminum periodically, frequently which varies according to need.

How to clean aluminum with traditional methods


There are three ways to tackle the problem: the first is to resort to traditional cleaning techniques, the second is to use products to clean aluminum and the third is to use tools, manuals or power tools.

All three methodologies are effective, of course, and their choice depends only on personal needs; the traditional ones, for example, have the advantage of being much cheaper than the others, but they require a greater commitment in terms of time and physical effort.

The most important questions, in this case, are mainly related to how to clean the aluminum of the pots , and in particular to how to clean the burnt pots externally ; the traditional method, in this case, involves the use of a solution of water and sodium bicarbonate, or water and vinegar.

Baking soda is especially good when you need to remove the limescale stains from the aluminum, which tend to form when the pots are not dried well with the towel.

The solutions of water and vinegar, on the other hand, or water and lemon juice, are excellent methods for removing encrustations; in this case it is advisable to wet the aluminum surfaces with the solution and leave it to act for a few minutes before rubbing, in order to let it penetrate deeply into the encrustations.

If, on the other hand, you want to know how to clean the mocha externally from black stains caused by continuous exposure to fire, or how to clean neglected and particularly blackened anodized aluminum , then you will need to use more “complex” solutions, such as water, ash and linseed for example. , or water, white vinegar and lemon juice.

Traditional cleaning is therefore cheap, since it can be done with substances that are easily available at home, but it takes time and elbow grease, especially if the aluminum has been neglected and has conspicuous encrustations or blackening.

How to polish aluminum with specific products


On the other hand, an alternative that can significantly reduce cleaning times for a reasonable price is the use of detergents or specific pastes produced by companies operating in the chemical and tool sectors.

There are various products of various types on the market; one of the most famous in the home is Sidol, a generic liquid for cleaning metals that can be used in the round, that is, it is suitable for all aluminum surfaces regardless of their type.

The only recommendation, in this case, is to avoid using these products to clean the inside of the pots or moka pot, for obvious reasons of food hygiene.

Chemical products are especially recommended for cleaning and polishing aluminum parts of cars and motorcycles; they are usually available in the form of creamy or solid paste, to be applied with the aid of specific tools (as we will see in the next paragraph).

One of the most famous on the market is the Iosso paste, suitable for all types of metal and fiberglass, but you can also find more specific products such as Lucidal for example, intended for cleaning aluminum shutters, doors and windows. Another generic product that offers good results in aluminum polishing is WD40 silicone oil, generally sold in aerosol cans.

How to clean aluminum with the help of tools and utensils


The third and final method of cleaning aluminum involves the use of more or less specific tools or equipment, especially hand tools and power tools. If you are thinking of using the dishwasher, however, you would do well to change your mind immediately; l ‘ aluminum in the dishwasher , in fact, is irreparably ruined because of chemical reactions between the oxygen present in the water and the sulfur content of the detergents.

Furthermore, as a result of these reactions, apart from blackening, aluminum could release toxic substances that would deposit on other dishes.

The use of metal brushes or sponges is fine in cleaning pans or coffee, but for the windows and doors and other surfaces can also consider the use of sandpaper fine-grained and polishes to which we referred in paragraph previous, even better if you use a sander, belt for sandpaper and orbital for polishing pastes.

The sanders orbital and orbital sanders are obviously the best choice, as they offer the advantage of being able to use both the felt and wool discs for polishing abrasive as well as those for the removal of encrustations.

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