In my understanding as a woodworker and as a small time amateur guitar maker, neck problem will not occur if you use a properly seasoned straight grained quarter sawn wood for the neck with the Spanish heelblock. Most guitar maker will include a carbon fibre rod or a hardwood strip in the middle like rosewood or ebony. Before the invention of carbon fibre, the other common neck reinforcement material is aluminium. The neck of a properly constructed classical guitar can easily take the tension imposed on it by the nylon strings. There should be this slight bending of the neck which acts as a relieve for the vibrating strings when the strings are on tension.Rau Le Creuset wrote: ↑Sat Aug 26, 2017 9:58 pmI have been reading about the spanish slipper heel method of construction, and forgive my ignorance, but I don't entirely understand the neck problems that can come about because of its design. Are these problems that could be dealt with using a truss rod? Or is it a more deep seeded issue?
Quite a many of the master guitars you have to exclude then as it is the most common way to join the body to the neck(luthier made guitars). Of course everything if badly made can fall in the pieces but don't let bad workmanship overshadow a good construction.Rau Le Creuset wrote: it seems better to stay away from the spanish heel construction method.
It won't stop the box distorting, because the torque on the neck still has to be reacted by the box. However, adjusting to compensate is a lot easier.
I do bolt-on necks and tilt necks (adjustable necks) as per the pics above. I don't know what the Smallman joint is like (never seen inside one), but most tilt necks are permutations on the Stauffer style adjustable neck. The woodwork is obviously different, but once tooled up there's not much in it either way. For a bolt-on neck you're adjusting angles and fits precisely; for a tilt neck you're adjusting more fits precisely. E.g. too much finish on the sides of the neck where it lets into the guitar top means it won't move!
Not that I (or anyone else I know) can hear on my guitars.
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