The angle formed by the back surface and the fingerboard surface is very important, determining in fact the future height of the bridge. (Right image)
In the upper image you can see the ribs adapted to fit the neck; I left a few centimeters of the shoulders unglued from the back, to permit some lateral adjusting of the neck.
Unfortunately this precaution makes it much more difficult to adapt the end of the shoulder ribs to the neck, because it gives them one more chance of movement.
This could be the reason why often in the old instruments the neck is glued OVER the linen strips between neck and back.
After some frustrating attempts I decided to glue all the surface of the ribs at the same time, and the adapting became easier.
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