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tango

Problems with new neck

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Hi

How much the neck fall down, measured at the end of the fingerboard, in a new in a violin, when strings are tuned for the first time?
I guess in violins made by me, between 0,5 and 0,75 mm. Maybe 1 mm at most.
A coleague changed the neck of his old instrument and fall down 2,5 mm (at the bridge). The fall seems to stop after a month.
Is it common such fall or may be the archings are weack?

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It is normal for the neck / fingerboard projection to sink a little on a new instrument. I usually set my neck slightly high to allow for this.

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I do the same as Bill. How much the neck will give in will depend on humidity, archings, wood propertis and graduations too.

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Thanks Bill and Louis.

Today I tunned that violin and guess that archings are some weak . Something to take note: the bassbar have the tallest part behind the bridge spot.

So this two things may contribute to lowering the neck I guess ¿Isn´t it?

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Tango,

If the pitch really dropped 2.5 mm as soon as the violin was strung up something is seriously wrong. I expect a 1mm drop over the first three years of a violins life. Less than that on a reset on an older instrument.

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15 hours ago, tango said:

Today I tunned that violin and guess that archings are some weak . Something to take note: the bassbar have the tallest part behind the bridge spot.

So this two things may contribute to lowering the neck I guess ¿Isn´t it?

Surely a weak arching has a predominant role on deformation, as well as a weak bassbar.  But I don't think at all that the position of the highest point of the bassbar can in any way play a role but it can only concern the stiffness in all its length, unless you have made a very strange bassbar shape.

PS Highest point behind the bridge? decidedly against the trend!:)

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Hi
The violin owner is not my customer so I only saw and heard the violin and the complains of the violinist. Of course I didn´t make opinios about that because that isn´t my shop.
From the outside I saw that the highest point of the bassbar were behind the bridge. So I thought that this may contributed to the lowering of the neck projection but main problem surely were the weak archings.
It was a good opportunity to observe, ask and learn

Thanks Davide and Natan for your valuable opinions.
Regards

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