Design of guitars and basses, Basically. The guitar has undergone variations in its shape over the centuries. In addition to the number of strings, variations of the instrument have arisen to adapt it to the needs of the interpreter until it adopted its current shape. This instrument is made almost entirely of wood and the main types used in its manufacture are Indian rosewood and others, spruce, Canadian cedar, pine, cypress and ebony, depending on the type of guitar (classical or flamenco).
Basically, the guitar consists of the soundboard, neck, bridge, fretboard, frets, strings and headstock. Some guitars have more than one fretboard (up to a known maximum of 6 necks) or have more than 7 strings.
After all the elements that make up the soundboard are glued together, it is joined to the neck and reinforcements are included in the contour of the two tops, in the centre of the back and in the lower and upper joints of the sides. The fingerboard is then attached. The capo is placed between the neck and the headstock and is used to support and separate the strings. The capo is usually made of ivory, bone, plastic or even metal, depending on the quality of the instrument.
There are many brands and designs of guitars and basses, what I have found now is a high range of guitar and bass designs that represent the different tastes of musicians and/or collectors.