Production

Carbon fiber is produced by a small number of specialized companies. They start with a fiber like polyacrylnitril. This is stretched and "charred" in a two step process at very high temperatures so that all elements except carbon are burnt.

These very fine carbon-fibers (5-8 micrometers) are bundled in "so called" rowings. Those can be woven or laid to make sheets or tubes.

We use such materials plus epoxy and hardener to make our multi-layer one-piece bow-stick, which we cure in a process that lasts several hours.

The resulting raw sticks are now trimmed and finely ground on all faces. They are cut to the correct length and receive an insert at the end in which the bore for the screw and the long whole are cut. Most of these steps are made similar to wooden bows, only that the carbon fiber is much harder, which makes it necessary to work with diamond-tooling.

The serial number and the name of the stick are engraved and laid out with paint. After that we apply the winding and the thumb-leather. For the hair we sort every single hair individually and take care to use exactly the right amount of hair that will give the bows its best playing characteristics. Although we buy only the finest hair available we usually sort out 50% due to irregularities, kinks or weak patches. With precisely cut wedges the hair is fixed and secured in the tip and frog. After the final quality control the bow is now ready for the concert hall.

Frequently asked questions regarding our bows.