Why might an E-string crack?
Sometimes, E-strings break off at the loop end, the bridge or the saddle.
1. at the loop end: This is due to the fine tuner hook becoming sharp-edged over time. The solution? Regular maintenance of the fine tuner hook by a luthier. With a small file, the luthier can round off the groove and sharp edges. A groove only occurs after many weeks or even months. For this reason, we recommend visiting a luthier every 6 months.
Another option for preventing the breaking of E-strings is to move a sleeve over the fine tuner hook. However, the pitch stability can suffer as a result, because the synthetic tubes are somewhat softer than the original fine tuner hooks.
Should this be unsuccessful, we recommend using E-strings with a ball end. Thomastik-Infeld includes a small envelope with this little ball for many E-strings, which can be pressed into the loop, if necessary.
2. at bridge and saddle: If the string breaks off increasingly at the bridge or saddle, we recommend that you get the grooves checked by a luthier. Applying sufficient graphite to the groove is also always very helpful!