Most parts of a violin bow are replaceable and repairable including the bow hair of course, the thumb leather, wire windings, bow frog ( repair or replacement) and the tension adjuster thread and nut. The bow stick itself is probably the most valuable part of a good bow and should it suffer the tragedy of breaking…fear not all is not lost there either.
Violin and other string instrument bow sticks are made from extremely hard and dense hardwoods like brazil-wood and pernambuco. To withstand the stress of holding horse hair at tension they are designed with the grain running longitudinally along the length of the bow to give them strength in this direction, however in other directions they are less strong, one particular area of weakness is at the tip. Here the grains run horizontally and are subject to shear stress and being a somewhat brittle hardwood, this is their weakest point if dropped, even on their side. Of particular note here, is that although a bow maker might chose to have the grain lines run vertically through the wood, they run horizontally. The decision not to is due to systematic weaknesses in the wood from tree shake in the felling process I am told.
With care it is possible to repair breaks at this point (and sometimes along the stick) by inserting a spline of hardwood vertically into the bow tip to strengthen gluing the 2 pieces back together, done well it is almost invisible to casual inspection. So if you have a nice bow that has suffered a break here is almost certainly well worth rescuing it.
One caveat: Purists may tell you it can change the feel of a bow as this will affect the dynamic of it (and perhaps even subtly the weight distribution)
The decision whether a violin should be repaired depends on your bow and budget. Student bows are quite inexpensive to replace, and cheaper than most repairs, but for a better bow (see Violin bows and cost ) they are almost certainly worth considering repairing.
Violin Bow repairs in Brisbane
To have a bow repaired it almost certainly won’t be available at a general music store (though they might engage the services of a repairer) and even for some specialty string stores they might do likewise. The skills of a bow maker are a related but seperate discipline to that of the violin maker. A good store will let you know what they can undertake or refer you on. certainly for myself I currently refer on bow rehairing – though in many cases a professional clean can significantly extend the life of a bow hair
