One can purchase a fretless guitar from several different places. Some of the places in which one can purchase a fretless guitar are: ultimate-guitar, Amazon, eBay, and fretless.
Gibson made a fretless, but a factory fretless isn't going to have the lines. Someone took a fretted and made it fretless.
The original bass guitar, invented by Paul Tutmarc in 1935, was fretless. Frets were not added until the model was innovated by Leo Fender in 1951.
Fretless bass guitar
A great website to purchase a bass guitar of any type is Sweetwater. The site includes 4,5,6 string guitars, fretless, acoustic, and left handed basses. If you prefer an in-store purchase then Guitar Center is the best place to find the right guitar.
Frets are marked on the bass guitar the same way as they are on the electric guitar or acoustic guitar. Metal lines run across the neck. If you're talking about a fretless bass then you shouldn't have to ask this question. It would be a big mistake to try learn the fretless bass before the standard bass. The frets are in the same positions but you should instinctively know where your fingers should be before advancing to fretless
To make a fretless guitar, you need to remove the frets from the fretboard of a guitar and fill in the gaps with wood filler or epoxy. Then, you will need to sand and level the fretboard to create a smooth playing surface. Finally, you can add markers or lines to indicate where the frets would have been to help with playing.
During his early years (Weather Report & George Duke) he used a fretless Lobue bass.
A musician would choose to use a fretless bass for sounds without frets. They would use fretless bass to create a different sound from regular guitars.
The godfather of the Blues is Junior Wells, and the first player we know of is B.B.King .
A fretless bass is a type of bass guitar that lacks the metal frets typically found on standard basses. This design allows for a smoother, continuous fingerboard, enabling players to produce glissandos and microtonal variations in pitch. It requires more precise finger placement for accurate notes, making it popular in genres that emphasize expressive playing, like jazz or certain styles of rock. Fretless basses often have a warmer, more rounded tone compared to their fretted counterparts.
Your question is badly written. There are no frets on a fretless bass. Most fretless basses have markers for where the frets would be. They are either lines on the fingerboard, or dots on the side. You could count the marks to see how many fret positions there are.