Saka Wardana/Getty Images If you own a mechanical keyboard, you may have seen online talk about lubricating the switches. This can be a great way to improve the smoothness of the switches, while also helping increase the keyboard's longevity by reducing the friction each switch has to endure during daily use. In fact, hot-swappable mechanical keyboards are one of the best buy-it-for-life tech products , purely because of how easily you can customize them. And if you plan to upgrade it with new keyboard switches , you should definitely take a look at adding some lube, too, or even buying pre-lubed switches for extra smoothness. But whatever type of switch you buy, you'll also need to keep in mind how often you should reapply the lube. Most people recommend lubricating your keyboard switches depending on how often and how extensively you use your keyboard.…