Rehairing instructions

Arrange the fibres carefully to create a flat, even ribbon.

Coruss bow hair can be lightly moistened during the rehairing process. This makes the fibres easier to handle and helps achieve an even distribution and correct final tension.

Make sure the ribbon remains straight and untwisted before fixing the second end.

Fit the Coruss bow hair using your usual rehairing method, securing the hair correctly at the tip and frog.

Keep the fibres evenly distributed across the width of the ribbon and maintain consistent tension throughout the bundle.

Before finalising the rehair, check that the ribbon lies completely flat from frog to tip.

This is the main difference from traditional horsehair.
Do not use a flame or heat to tighten, straighten or finish Coruss bow hair.

Traditional horsehair can be corrected by carefully applying heat because the natural fibres react to it. Coruss bow hair behaves differently and should instead be tensioned mechanically during the rehairing process.

If necessary, lightly moisten the hair and adjust the tension manually until the ribbon is even.

Once the hair is fitted, tighten the bow gradually and inspect the complete ribbon.

Check that:

• the hair is evenly distributed
• the ribbon remains flat
• no section is twisted
• the tension is consistent from one side of the ribbon to the other

Allow any moisture used during the rehairing process to dry completely before applying rosin.

Coruss bow hair requires only a small amount of rosin to achieve effective grip.

Once the hair is completely dry, apply a light and even layer from frog to tip.

We recommend Coruss rosin, which was developed specifically for Coruss bow hair.

Avoid applying excessive quantities. Too much rosin can build up on the fibres and reduce the consistency of the grip.

Coruss bow hair can be cleaned if it becomes overloaded with rosin or begins to feel smooth or “glassy”.

Isopropyl alcohol can be used carefully to clean and reset the fibres.

Keep alcohol away from the stick, varnish, frog and other finished parts of the bow.

Allow the hair to dry completely before applying fresh rosin.

Important
Unlike natural horsehair, Coruss bow hair does not shrink after contact with alcohol.

Do not rely on alcohol or drying to increase the tension of the ribbon. Final tension should always be adjusted mechanically.

If you are working with Coruss Bow Hair for the first time or have a question during a rehair, our team is available to help.

We work directly with professional luthiers and can provide guidance on installation, maintenance and troubleshooting.