The object of using this joint, which is constructively one of the weakest used in joinery, is that moulded surfaces that have to be changed in direction shall not be stopped abruptly nor continued in unsuitable curves.
George Ellis, Modern Practical Joinery, 1902
Miter joints in classical guitar making are purely decorative.
Most joints are butt joints. The sides are joined to the heel of the neck in slots, a scarf joint is used to make the head/neck union, some makers use a fancy "V" joint for that union. Click here to read more about the "V" joint.
The only place where I use a miter joint is where the bindings meet the end graft.
The binding runs over the top of the end graft...
...and a miter joint is used to join the side binding purfling to the purfling in the end graft.
As you can see in this photo, the bindings are butted together. Some makers use a scarf joint to join the ends of the binding.
Fancy binding and purfling schemes don't make a guitar sound good, that sound comes from how the wood is worked.
Pretty binding makes for a visually pretty guitar.
My goal is to make a guitar that sings so well your heart melts.
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