Ebonprex fingerboards with saddle and nut
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Ebonprex is an innovative material that solves many of the problems of stability, hardness and aesthetics of ebony fingerboards currently on the market. Ebonprex is made of thin strips (0.8mm) of dyed beech glued unidirectionally under pressure. With this system, a density of 1.2 t/m3 is achieved, complete stability, extreme hardness and resistance to wear, a high speed of sound transmission and aesthetically it has nothing to envy to the old dense and black ebony now protected by CITES and no longer available for the production of fingerboards.
Features
- visually similar to ebony; great finished surface quality
- best workability
- best dimensional stability, high rigidity
- high sound conductivity
Fingerboards come with lower and upper nut of same material.
Shipping and returns
Standard shipping in Italy: €9.90 incl. VAT.
For international shipments, the website calculates the rate at checkout.
For packages over 30 kg, contact us for a quote.
Returns: you have 10 days from receipt to exercise your right of withdrawal. Upon delivery, always check the packaging integrity and, if damaged, write "accepted with reservation" on the courier's delivery note.
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Description / Ebonprex fingerboards with saddle and nut
Greentech with Sonowood: A New Chapter for Instrument Makers and Musicians.
Outstanding Sound Qualities
Instrument makers and musicians appreciate the acoustic qualities of Sonowood. The high-speed sound conduction and a damping comparable to ebony make it ideal for creating optimized sound qualities and ensuring excellent playability.
Constant Availability
The wood used is sourced from sustainably managed local forests, making the supply chains short and efficient. There are rarely any disruptions to supplies, and the wood is also easy to trace back to its source. This means Sonowood is available in a consistently high quality and is always in ready supply.
No Trade or Travel Restrictions
Increasing restrictions on the trade of tropical timber are placing pressure on instrument makers, while import restrictions for instruments made from tropical timber can cause added complications for touring musicians. With Sonowood, the trade restrictions do not apply; musical instruments created using Sonowood do not need permits to cross borders and are unaffected by the terms of CITES.
100% Authenticity
Sonowood is a solid wood, not a plastic composite. It is actual wood that is only modified with biological substances, if at all. This means it can be processed in the same way as natural wood and feels the same too.
Information for violin makers
The mass, shape and frequencies of the fingerboard plays a major role in the sound quality of the instrument. Thanks to the high rigidity and density of our materials, fingerboards can be made thinner than those made of the lower quality ebony that is found today.
WARNINGS
- use a dust mask when sanding
- prolonged contact with water may cause slight swelling along the joints
- swelling may also occur with the keyboard glued while in a UV box, with the instrument kept continuously moist to accelerate the tanning. We recommend removing or covering the ebonprex fingerboard during this process
- Ebonprex is sensitive to exposure to alkaline agents, while it supports acids without problems
With or without glue channel
The glue channel not only helps in gluing the fingerboard, but also reduces the mass which is an further advantage for the sound.
Fingerboard specifications
The fingerboards developed and manufactured in Swiss by Sonowood are produced to specifications for each of the different instruments of the violin family, and in various materials and designs. The surface is milled precisely so that it could only be sanded.
| Material parameters | Ebonprex | Ebony |
| Density t/m3 | 1.1-1.25 | 0.9-1.2 |
| Compression Hardness (MPa) | 60-63 | 40-60 |
| E-Module N/mm2 | >21.000 | 12.000-19.000 |
| Signal Speed (m/s) | 5000-5300 | 4000-5000 |
| Damping (Q) | 100-110 | 80-110 |
Dimensions for violin Makers model:
- length: 270mm
- widths: 24.1mm to 42.6mm
- edge thickness: 5.5mm
- top/bottom radius 39/41mm
- maximum depth of hollow under G/E string: 0.7/0.25mm
- with or without glue channel
Dimensions for violin Restorers model:
- length: 271mm
- widths: 25mm to 43mm
- edge thickness: 6.5mm
- uniform radius 40mm
- maximum depth of hollow under G/E string: 0.7/0.25mm
- without glue channel
Dimensions for viola:
- length: 315 mm
- widths: 25.3mm to 47.5mm
- edge thickness: 5.5 mm
- top/bottom radius: 39mm/41mm
- maximum depth of hollow under C/A string: 0.8/0.35mm
Dimensions for cello:
- length: 585 mm
- widths: 34mm to 64.5mm
- edge thickness: 9 mm
- top/bottom radius: 39.5mm/46mm
- maximum depth of hollow under C/A string: 1.1/0.7mm