There are several different types of materials that can be made into the keyboard cover. The two most common are aluminum and plastic. Aluminum and plastic are the easiest to mass produce, which is why there are so many keyboards made of these two materials. Less common types of keyboard cases are acrylic and wood; to order them, you usually need someone to customize them online. Or you can design these keyboards yourself, if you like DIY.
Each material has its own look, feel and weight, and you can change the sound of each keystroke as you type. In addition, some materials are more durable and last longer than others. Choosing the right material depends on personal preference and how much you are willing to spend.
Aluminum housings are another common option and tend to be heavier and stronger. They are a good option for those who want a robust and stable enclosure. Aluminum housings are generally less flexible and stronger than plastic housings. The quality of the aluminum housing varies greatly. The best manufacturers tend to machine more high-end aluminum housings, so that more accurate and cleaner housings can be made. The best aluminum enclosures also tend to be heavier. The anodizing/surface treatment of aluminum also determines the quality of the product. Anodizing is the process of turning the outer surface of a metal into a more decorative, durable and corrosion-resistant layer. Usually this is done through the electrochemical process of placing aluminum in an acid bath and passing current through the metal.
Generally speaking, products that have undergone more thorough anodization will last longer and have a much better finish afterwards. The outer layer will fade over time, so the thicker the anodized layer, the better. The aluminum case is an excellent material choice for the keyboard case, but you want to ensure the quality of the metal. Otherwise, it might make sense to go for the plastic option. Keep in mind that metal cases are more conductive and tend to be colder in winter, so it can be uncomfortable to touch them when the temperature is low.
Steel boxes are not as common as aluminum boxes because they are more difficult to produce and process. Steel is usually much heavier than aluminum and is the most impact and bending resistant box you can buy. It also has antioxidant properties. The stainless steel shell makes the keys feel stiff and less flexible. If you want a very difficult and heavy case that can withstand a lot of abuse, this is a good choice. Stainless steel cases are usually only available in different shades of silver/gray, and they are usually shiny and reflective.
A wooden box not commonly used on mechanical keyboards. They require more preparation work, such as cutting, sanding and finishing. The quality of the wooden base mainly depends on the type of wood used and how it is prepared. Due to the different types of wood and its production methods, wooden boxes provide some of the most interesting aesthetic options. Some of the most common choices are mahogany, zebra, and walnut. Usually these shell styles are only suitable for 60% custom keyboards, but there are others available online, you just need to study more. Some of the benefits of wooden boxes include: good sturdiness, unique aesthetics, and the fact that they won't bend too much.