Maple, Curly, FC
Hard Maple, Sugar Maple, Rock Maple
Grain is generally straight, but may be wavy. Has a fine, even texture.
Unlike most other hardwoods, the sapwood of Hard Maple lumber is most commonly used rather than its heartwood. Sapwood color ranges from nearly white, to an off-white cream color, sometimes with a reddish or golden hue. The heartwood tends to be a darker reddish brown. Birdseye Maple is a figure found most commonly in Hard Maple, though it’s also found less frequently in other species. Hard Maple can also be seen with curly or quilted grain patterns.
Notes of Interest
Curly Maple is not actually a species, but simply a description of a figure in the grain—it occurs most often in soft maples, but is also seen in hard maples. It is so called because the ripples in the grain pattern create a three dimensional effect that appears as if the grain has “curled” along the length of the board. Other names for this phenomenon are: tiger maple, fiddleback maple, (in reference to curly maple’s historic use for the backs and sides of violins), or flamed maple.
Unlike quilted maple, curly maple is most pronounced when the board is quartersawn, and the curls usually become much less pronounced or absent in flatsawn boards. Hence, on wide boards where the grain tends to be close to vertical (quartersawn) near the edges and horizontal (flatsawn) in the center, the curly pattern will be most evident on the edges of the board, with the figure diminishing in the center.
It is not completely clear what environmental conditions (if any) cause this phenomenon, but there are different grades of curly maple, which greatly effect its price. Ideally, the criteria for determining value is based upon: color (both uniformity and lightness—whiter is preferred), frequency of the curls (tight, closely-spaced curls are preferred), and intensity (more depth is preferred).