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发表于 2015-7-30 14:48:09
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本帖最后由 Hendrix-HK 于 2015-7-30 14:49 编辑
一般来说不是分地域，分树种和硬度
http://www.frudua.com/hard_ash_vs_swamp_ash.htm
The word "swamp" does not refer to a species of wood but actually to a "zone" where ash grows. There are different ways to describe what is actually the same tree, which by growing in different areas of the USA (north or center or south) develops almost totally different characteristics. So we have "red ash" also known as "pumpkin ash" (fraxinux prufunda) which is what we guitar makers call "swamp ash", a
tree growing in the swamp areas of Mississippi and Alabama, and other heavier species such as green ash (Fraxinus Pennsylvanica, "white ash", Black Ash (Fraxinus Nigra), which are more common in the centre and in the north of the country.
Hard ash vs swamp ash
Ash tree.
All the above are actually names which are given to the same tree to distinguish the very different characteristics (weight, colour, density) the tree develops by growing in different areas and environmental conditions.
So is it the place where it grows that makes "swamp" ash so light? Possibly, but not only. Also, how and where the woodworker cutsthe blank from the tree has an importance.
CUTS: Everything else being the same, a cut in the upper part of the tree will result in a heavier blank of wood. Conversely, a piece of wood obtained from the lower part of the tree will be lighter. The rule here is that: the further north the ash tree grows, and the higher and the more internal the cut into the tree, the heavier the wood will be, and vice versa.
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发表于 2015-6-30 08:02:14
