Here is a topic I've heard discussed at my local shop for some time. Some builders...Martin being one of them, take great pride in their Dovetailed (glued) neck construction. Purists and collectors of vintage models claim this gives the best bond between neck and body. It was also the method employed by stringed instrument manufacturers for centuries. Martin uses this construction on 18 and above models.
Newer construction techniques have employed "bolt-on" or mortise and tenon construction....most electric guitars and some acoustic builders (Taylors and some Martins) now utilize this constructon. Advocates of this type of construction maintain that modern day construction (CNC machines) make this neck bond equally as well and also makes neck set up and repair much easier.
Martin uses bolt on construction on the LX, DX, D1, D15, and D16 models since the mid 90's (older D15 and D16 models used dovetail construction).
Does anyone really care what kind of neck construction is used on newer guitars? Do you think Martin may shift to bolt on necks in the future? Some say that Martin will make this shift for easier neck set up and repair reasons. They refer to Martin's late acceptance of the adjustable truss rod as an example of the company's slow acceptance of modern construction techniques. Although Martin used steel reinforced necks for years....they were slow to implement adjustable truss rods. Today, the adjustable truss rod is employed by almost all builders. Bolt on necks might become the next common mode of construction.
What do think about neck joint construction? Let the discussion begin.