If you want a custom custom mechanical keyboard mechanical keyboard, there are several factors that you need to consider. The first thing you need to consider are the switches and keycaps. There are many different types of switches available. The most common are the Keychron K Pro and Q3. You can also choose your own keycaps. The instructions for installing the switches should be straightforward, but you may need a little help figuring out the key placement.
GMK keycaps

Custom mechanical keyboard keycaps are available in a variety of styles and colors. Some keyboard manufacturers offer custom keycaps, while others specialize in OEM work. GMK has a reputation for producing awesome keycap sets that are made from thick ABS plastic. Their keycaps are also known for having unique legends and designs. GMK’s keycaps are not cheap, however. A typical set will cost more than a mid-range keyboard.
GMK switches

Choosing GMK switches for your custom mechanical keyboard will increase the performance and feel of your keyboard. These switches are manufactured with a Cherry profile that is thicker and shorter than most other keycaps. As a result, they are ideal for typing and gaming.
Keychron K Pro switches

If you’re looking for a mechanical keyboard that can be customized to fit your needs, the Keychron K Pro is the way to go. With its modular design, this mechanical keyboard can be easily assembled and is fully customizable. It comes with a solid ABS plastic case, keyboard PCB, steel plate, double-shot OSA PBT keycaps, and customizable switches. The Keychron K Pro also comes in three different colors.
Keychron Q3

If you’re looking for a mechanical keyboard that’s easy to set up and customize, the Keychron Q3 is the way to go. This gasket-mounted design is durable and comfortable, and it supports Windows, macOS, and Linux. The keyboard doesn’t include a wrist rest, but it does have all the necessary features for a home or office computer.
Drop CTRL

The Drop CTRL is the flagship product of TenKeyLess, a company known for making premium mechanical keyboards. It features a solid aluminum frame with built-in switch plates and magnetic legs, as well as hot-swappable switch sockets. It also features an RGB wave lighting effect, making it ideal for coding and office use. Although the keyboard features a relatively high latency, many users find it acceptable for their needs. Those who are serious about gaming, however, may want to look for a more responsive mechanical keyboard.
Engineer SS-02

If you’re interested in modifying your mechanical keyboard, you may have heard about the Engineer SS-02 keyboard desoldering tool. This tool allows you to separate the switches from the keyboard’s PCB without damaging them. It’s an easy way to improve the sound and feel of your keyboard, and it’s inexpensive and easy to use.
QMK

The QMK project is a software project aimed at developing customizable firmware and giving community members feedback on the keyboard. It is based on the tmk_keyboard firmware, and works with many keyboards that are supported by the community.
VIA

A VIA custom mechanical keyboard is an open-source project that supports QMK, a keyboard controller that allows users to change the keyboard’s firmware on the fly. Although it does not support every feature of QMK, VIA is already supported by over 150 different keyboards. VIA supports a wide variety of different keyboards and is available for download and flashing from the VIA website.