Exploded axonometric · Diagram Design
Keycaps come off first. Under them every key has its own switch, held by a steel plate and plugged into the board in the case.
The headline
Keycaps change the sound and the look. The switch under each key sets how far it travels and how hard it pushes back, so the switches get the accent.
Every keycap and switch is the same rounded prism as the case, just smaller. The part box is the envelope of its grid.