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A set-in neck (often shortened to set neck) is the traditional form of joining the neck of a stringed instrument with its body. This is typically done with a tightly fitted mortise-and-tenon or dovetail joint, secured with hot hide glue. Among its qualities are a warm tone, long sustain, and a large surface area to transmit string vibration, leading to a "live" feeling instrument. In guitars it also often allows superior access to top frets closest to the body.
It is a common belief that this yields a stronger body-to-neck connection than an inexpensive mechanically joined bolt-on neck, though some luthiers believe a well-executed bolt-on neck joint is equally strong and provides similar neck-to-body contact.[citation needed] However, neither of these joints is as strong as a neck-through construction, the third of the common methods of neck attachment, which requires more material and is usually found only on high-end solid body guitars.
Set-in necks are the most popular on acoustic guitars. Almost all major acoustic guitar manufacturers (notable exceptions being Taylor Guitars, Godin Guitars, Collings Guitars) use set-in necks and have applied this method also to their electric guitars, for example Gibson. With hollow body set-in neck electric guitars of the 1940s being rather expensive to buy and repair, newcomer Fender in 1950 introduced electric guitars that were easier to manufacture, combining a simple solid body with a bolt-on neck. Fender also introduced the electric bass guitar by adding a longer neck bolted to a solid guitar body.
In rare cases, makers use other solutions. Babicz Guitars makes a mechanically joined neck that can be "wound" up or down to adjust action height.