The GH60 project is a tutorial and process for letting users assemble their own mechanical keyboard. There’s a decent intro here, and you can dig into foreign sites for the details. For us users, though, all you really need to know is that GH60 is the process of assembling a mechanical keyboard yourself. GH60 itself is just a keyboard PCB. Once you have the PCB, all that’s left is soldering switches, adding a case, and deciding whether to throw in LEDs. At first I stuck to the principle of “if you’re gonna do it, do it big” when picking parts, and by the end I found that an original Cherry switch + aluminum case + steel plate + custom purple-black-orange three-color keycap combo had already shot the price past 900. Damn it, at that price why wouldn’t I just buy a Filco?