Maple

SCIENTIFIC NAME
Acer saccharum. Derivation: The genus name is the classical Latin name for maple. The specific epithet is Latin for sugar, referring to the sweetish sap from which maple sugar is made.

FAMILY
Aceraceae, the maple family.

OTHER NAMES
hard maple, rock maple, sweet maple, black maple.

DISTRIBUTION
Sugar maple grows in every state east of the Great Plains, except Florida, South Carolina and Delaware but is most important in the New England states and the Great Lakes states, including the Canadian Great Lakes provinces.

THE TREE
A beautiful symmetrical tree, the sugar maple grows from 70 to 125 feet in height with a trunk 24 to 36 inches in diameter. Its leaves turn gorgeous shades of red and yellow in the autumn. Its name is derived from the delicious maple syrup and sugar obtained by boiling down the sap in the spring. Sugar maple is the state tree of New York, Vermont, West Virginia and Wisconsin. Generic maple is the official national tree of Canada.

THE TIMBER
The heartwood is a delicate, very light reddish-brown or very light tan, while the wide sapwood is nearly white. Sugar maple has a fine uniform texture and is very strong and hard with close straight grain. A small percentage of the trees produce special figures such as bird's eye, blistered, curly or fiddleback. Average reported specific gravity is 0.56 (ovendry weight/green volume), equivalent to an air-dried weight of 43 pc£. Because of the strength and stiffness of this maple species, it ranks as one of the more valuable hardwoods.


Curly maple

Spalted maple

Ambrosia is a term applied to maple as a consequence of the effect of the ambrosia beetle. The beetle bores small holes into the tree and introduces a fungus which then grows in the channels bored out by the beetle. The fungus spreads throughout the tree and causes a streaky discoloration in the wood. When a piece of ambrosia maple is turned on a wood lathe, it can yield a piece of exceptional beauty.


SEASONING
This timber can develop stain during the drying period unless fairly rapid drying is employed. Otherwise, it handles well by both kiln and air drying techniques and seasons with only slight degrade. Average reported shrinkage values (green to ovendry) are 4.8% radial, 9.9% tangential and 14.7% volumetric.

DURABILITY
Sugar maple is not resistant to either fungal or insect attack but is more durable than some of the other maple species. The fire resistant standards are higher than those of the average timber.

WORKABILITY
Sugar maple is well suited to all types of turnery, works well with tools and finishes very smoothly. Glue adheres well and nail and screw holding properties are good. Pre-boring is necessary on thin stock to prevent splitting. It takes stain readily and gives excellent results with paint or enamel.

USES
The finest dance floors, bowling alleys and bowling pins are made of sugar maple. It is also important in piano manufacture for making the part into which the pins for the strings are driven. A great deal of maple is used for furniture, paneling and cabinetry. A special use is for shoetrees and lasts. Wood with figured grain is highly prized for decorative cabinetry and in certain types of stringed musical instruments. It is a good timber for bending.

SUPPLIES
Sugar maple with plain straight grain is readily available from many lumber dealers at a medium price range. Wood with figured grains is much more costly and may be classified as rare in availability.

Information from A Guide to Useful Woods of the World, Second Edition, James H. Flynn, Jr. and Charles D. Holder, Editors. Forest Products Society, Madison, Wisconsin, 2001.

Photographs from MDArtworks