2 x 2 x 12 Kiln Dried turning squares
2 x 2 x 24 Kiln Dried turning squares
Assumed, Wood Working Properties & Specifications
Other Common Names: Granadillo (Mexico, Belize, El Salvador, Honduras), Coyote, Cristobal (Costa Rica), Trebol, Guayacan trebol (Colombia), Roble (Venezuela), Koenatepi (Surinam), Macacauba, Jacaranda do brejo (Brazil), Cumaseba (Peru).
Distribution: Continental tropical America from southern Mexico to the Brazilian Amazon region, and Trinidad.
The Tree: Heights to 80 ft with trunk diameters of 28 to 42 in.; boles are straight, cylindrical, and clear to 60 ft; buttressed.
General Characteristics: Heartwood bright red to reddish or purplish brown, more or less distinctly striped; darker specimens look waxy; sharply demarcated from the nearly white sapwood. Luster medium to high; grain straight to roey; texture mostly medium to fine, sometimes coarse; without distinctive odor or taste.
Weight: Basic specific gravity (ovendry weight/green volume) varies with species from 0.73 to 0.94; air-dry density 55 to 73 pcf.
Mechanical Properties: (First set of data based on the 2-in.
standard, the second set on the 2-cm standard, and the third set on the
Moisture content Bending strength Modulus of elasticity Maximum crushing strength
(%) (Psi) (1,000 psi) (Psi)
Green (75) 22,320 3,020 10,540
12% 27,600 3,200 16,100
Green (30) 15,900 2,130 7,460
15% 17,500 NA 8,940
12% (24) 16,800 2,500 9,800
Janka side hardness at 12% moisture content ranges from 1,710 lb. to 3,200 lb. Amsler toughness at 12% moisture content is 242 in.-lb (2-cm specimen).
Drying and Shrinkage: Generally reported to air-dry slowly with a slight tendency to warp and check. No data available on kiln schedules. Shrinkage green to ovendry: radial 2.7%; tangential 3.5%; volumetric 6.5% (P. pinnatum); values are remarkably low for a wood of this density.
Working Properties: Not very difficult to work, finishes smoothly, and takes a high polish.
Durability: Heartwood reported to be highly resistant to attack by decay fungi and insects; resistance to dry-wood termites is rated very high.
Preservation: Heartwood is highly resistant to preservation treatments; sapwood responds with good absorption, but irregular penetration.
Uses: Fine furniture and cabinet work, decorative veneers,
musical instruments, turnery, joinery, specialty items (violin bows, billiard
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