Cellos, are just like big violins and just the same to repair right? …well almost for a good cello repair. There is a lot more wood in cellos and a lot more tension from the strings. Generally speaking cellos need much the same sort of repairs as violins with cracks and chips (just on a bigger scale). One big exception however are the cello necks, which have more of a tendency to break, particularly in student cellos. Why is that? well they are bigger and so more likely to fall (and have further to fall) and because of their size seem more susceptible to misadventure.
Another big factor is the construction of the neck joint itself. The grain goes lengthwise for strength in the direction of the fingerboard, this means though, that the neck root is cross grain and comparatively thin. In particularly for student cellos , where the timbers are less likely to be a higher grade, sometimes the fitting of the neck into the top block isn’t quite tight and there is more chance of misadventure these quite often come to my shop for repair.
There are many ways to repair a neck depending on the value of the instrument.
For student cello neck repairs (ie that are parent wallet friendly ) and consulate with the value of the cello. I tend to reseat and glue the neck and then go straight through the fingerboard and into the neck with some reenforcing such as hardwood dowel, optionally an almost invisible ebony plug can be put on the top (though this adds to the cost ). This avoids having to remove and refit the fingerboard (which takes time and ads to cost). Another option is to replace the neck or regrafting a neck, but this is quite cost prohibitive for a student instrument. Depending on the cello model sometimes a lamination, screw or dowel was placed into the neck when it was made to help strengthen it. Actually while it makes the neck stronger, it can makes the repair a bit trickier or limit options available. Another factor in the mix is that student cello necks are quite often poorly fitted (which is why they broke in the first place).
After a cello neck has been repaired often the neck projection sets a bit higher (60% of cases), because the dowel is supporting the neck better and so it doesn’t warp under tension anymore, in such a case sometimes the bridge needs to be replaced to recover the string action (height) above the fingerboard.
With Cello neck repairs I am sometimes faced with the difficult decision, do I make a less traditional repair, a one time repair, or one that can be reversed out ( this is the usual strategy for traditional instruments). Usually this depends on the value of the cello, the condition it is in and what the owners want to do. Have a look at what is involved in removing the top of a cello to do a repair as an example.
Doing right by the instrument to maximise its life, right by the student by making sure its playable again and right by the parent/school by keeping the costs down so it’s worth doing is a juggling act of sorts. Music has to be the winner though right?