Bird's eye maple
The bird's eye maple is a malformed form, especially of the sugar maple ( Acer saccharum ). The very light wood is characterized by point-like, bird's eye- like structural changes (English bird's eye ), which arise from growth disorders of the cambium . The exact reasons for its formation are still unknown. A fungus is occasionally considered a trigger.
Similar bird's eye effects have been documented in numerous other, often North American tree species, particularly birch , but also white ash , black walnut , coastal redwood , American beech and numerous other species.
properties
Birds eye maple is hard. It is not weatherproof and yellows when exposed to light. Bird's eye maple has a density of between around 0.48 to 0.75 g / cm³ and a bulk density of between around 0.53 to 0.79 g / cm³.
application
Bird maple wood is coveted because of its decorativeness, but today it is of secondary commercial importance. Because of its rarity, best qualities can fetch prices up to fifty times the price of normal sugar maple wood.
Since the typical image is only visible with tangential cuts and peeled veneer , the usability is also technically restricted.
In the automobile industry it has occasional importance as a wood decor. In the manufacture of musical instruments , bird's-eye maple is used for high-quality string and plucked instruments such as violins, (electric) guitars and electric basses, as well as pianos . The oldest known objects made from bird's eye maple are Roman table tops made from field maple .
Individual evidence
- ^ A b Don C. Bragg, Douglas D. Stokke: Field Identification of Birdseye in Sugar Maple ( Acer saccharum Marsh.) , Research Paper NC-317, St. Paul, MN: US Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1994
- ↑ Entry on the bird's eye maple from the wood lexicon at http://www.holz-technik.de , online , accessed on October 13, 2009
- ↑ http://www.holzhandel.de/ahornhlzer.html
- ↑ Don C. Bragg: The birdseye figured grain in sugar maple (Acer saccharum): literature review, nomenclature, and structural characteristics. In: Canadian Journal of Forest Research. 29, 1999, pp. 1637-1648.
