Hickory (Carya ovata) – CNC Router carving test
Hickory wood carved with clear cutting lines, fraying at places but retains detail during the CNC router test. Test was run on a single relief with both 1/4′ router bits. The rotation speed versus feed rate is not critical. The wood produced a clear surface with good developed shavings. Due to the carving lines, sanding was required starting at P120. Throughout the carving process the relief created many burs. More testing is required to determine suitability for carving.
More carvings using various wood are available in our carving library
Distribution: Eastern United States
Other Names: Shellbark hickory, Hickory, Big shagbark hickory, Kingnut
Characteristics: The hickories are an important group within the Eastern hardwood forests. Botanically they are split into two groups; the true hickories, and the pecan hickories (fruit bearing). The wood is virtually the same for both and is usually sold together. Hickory is the hardest, heaviest and strongest American wood. The sapwood of hickory is white, tinged with inconspicuous fine brown lines while the heartwood is pale to reddish brown. Both are coarse-textured and the grain is fine, usually straight but can be wavy or irregular.
Working Qualities: The heaviest of American hardwoods, the hickories can be difficult to machine and glue, and are very hard to work with hand tools, so care is needed. They hold nails and screws well, but there is a tendency to split so pre-boring is advised. The wood can be sanded to a good finish. The grain pattern welcomes a full range of medium-to-dark finishes and bleaching treatments. It can be difficult to dry and has high shrinkage.
Uses: Hickory is used for tool handles, furniture, cabinetry, flooring, paneling, wooden ladders, dowels and sporting goods
Technical Data: (Visit the Wood DataBase for explanation and details)
Tree Size: 65-100 ft (20-30 m) tall, 1-2 ft (.3-.6 m) trunk diameter
Average Dried Weight: 50 lbs/ft3 (800 kg/m3)
Specific Gravity (Basic, 12% MC): .64, .80
Janka Hardness: 1,880 lbf (8,360 N)
Modulus of Rupture: 20,200 lbf/in2 (139.3 MPa)
Elastic Modulus: 2,160,000 lbf/in2 (14.90 GPa)
Crushing Strength: 9,210 lbf/in2 (63.5 MPa)
Shrinkage: Radial: 7.0%, Tangential: 10.5%, Volumetric: 16.7%, T/R Ratio: 1.5
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