Remove your Fiberreed from the mouthpiece after each playing and dry it. It is best stored in its original packaging or in a reed holder. Do not leave your Fiberreed on the mouthpiece. The corners of the reed tip can warp after prolonged use and bend up towards the mouthpiece, which changes the response. If this does happen, dry your Fiberreed carefully and gently, e.g. on a heater or with a hair dryer. The temperature should not exceed 80°. Your Fiberreed should then have returned to its original shape.


You can clean Fiberreed in a variety of ways. Dishwashing liquid or toothpaste are suitable. Disinfection with alcohol or a non-toxic disinfectant is also possible.

This is particularly recommended if the reed has been played by others.

After prolonged use... can happen that small pieces break off at the tip of the reed. This does not usually affect the sound or the response. You can get the tip of the reed smooth again by carefully sanding it with 1000-grit sandpaper at a right angle (like filing nails). Remove as little material as possible (maximum 0.5 mm), otherwise the reed will lose its harmony and become too heavy.

ADDjust Vary Support

Harry Hartmann's Fiberreed in the green pack are originally equipped with a yellow rubber pad. The rubber support allows the reed to swing more freely, especially when a metal blade screw is used. ADDjust Vary Support is a pack of four different rubber pads exclusively for the Harry Hartmann's Fiberreed model in the green pack. These rubber supports can be used to replace the rubber support supplied with the reed . The sound and playing characteristics of the reed are influenced by the different degrees of hardness of the rubber pads. The ADDjust Vary Support pack contains two softer and two harder pads. The softer the support, the lighter the yellow tone, the harder the darker. The softer supports also soften the sound somewhat and strengthen the sub-tone range. The harder pads make the sound somewhat more direct and improve playability in the high registers.

The rubber pads are fitted with an adhesive film. A sensible way to find out which of the pads is best for me is as follows: After the original reed support has been played once more, it should be removed. It can simply be peeled off. The adhesive foil usually sticks to the reed , but sometimes it also sticks to the rubber pad. Both are fine. The four ADDjust Vary supports can then be placed one after the other. The white protective film of the adhesive tape is not yet removed. Once all five different rubber supports (the four ADDjust Vary Supports and the original support) have been tested and it is clear which one comes closest to your personal sound preferences and best supports the desired playing characteristics, this support can be permanently attached to the reed . If it is the original reed rest, simply press it firmly back into place. If it is one of the four ADDjust Vary Support rubber pads, remove the white protective strip from the adhesive film on the underside of the pad. Make sure that the adhesive film remains on the support and is not removed together with the protective film. The rubber pad can now be permanently attached to the shaft of the blade.

If the adhesive film no longer adheres sufficiently after prolonged use, it can be replaced with a new piece of commercially available double-sided adhesive tape.