“Why did my E string break at the loop end?”
In recent years, we have begun to study cases of loop-end E string breakage more intensively, after several customers brought the issue to our attention. In fact, we had heard and read about this problem many times even before we started producing strings ourselves, we had not encountered it personally.
Fine Tuners and Their Impact on String Safety
We soon discovered that the reliability of loop-end E strings varies greatly depending on the individual setup of the instrument. While some violinists use loop-end E strings for many years without any issues, others experience breakage during tuning or even during installation.
The cause became clearer after we asked affected customers to send us not only the broken E strings, but also the fine tuners used on their instruments. There are several quality levels of fine tuners, and somewhat paradoxically, we found that very high-quality fine tuners — often of German origin — can increase the risk of breakage.
The hook of these fine tuners is typically cut from sheet metal and made of very hard steel. Although the edges of the hook are rounded, the string loop is bent sharply at two points. Because of the hardness of the steel, the string cannot settle naturally into the hook, which creates significant stress at these bends.
In almost all cases, the string breaks at one of these bending points, as shown below.
On the other hand, less expensive fine tuners, often made from softer metal, behave differently. While they may show signs of lower manufacturing precision (such as visible edges, misaligned nuts, or loose pins), their softer material can actually help protect the string. The string wire slightly embeds into the hook, forming a more rounded contact area.
As a result, even if the edges appear sharp, the overall stress on the loop is reduced and the risk of breakage is significantly lower.
Safe Solutions for Loop-End E Strings
For the sake of accuracy, it should be mentioned that one manufacturer has solved this problem in a very effective way. Wittner produces plastic protectors for loop-end fine tuners. These protectors keep the loop round and prevent sharp bending, making breakage extremely unlikely.
Unfortunately, many violin shops do not stock these seemingly “trivial” plastic protectors, and only a small number of players are aware of their importance. Even many sales representatives have never encountered them. For this reason, we decided to stock Wittner fine tuners exclusively with plastic protectors in the Warchal shop. Replacement protectors are also available, as the protector should be changed with every string replacement. Each package contains eight protectors.
An alternative solution is the Dual-use Titanium adjuster for Loop-end & Ball-end E strings. This adjuster features a refined design and a very smooth adjusting mechanism, making it a safe and reliable option for both loop-end and ball-end strings. It is suitable for both violins and violas and does not require the use of plastic protectors.
With these setups, we can ensure reliable and trouble-free use of loop-end E strings.