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riddle

Name

• Scientific name: Tectona grandis L. F.
• Spanish name: Teka

Origin

Description of the wood

• Sapwood: Yellowish-white to grayish.

• Heartwood: Yellowish-brown to dark brown with frequent dark gray streaks.

• Grain: Straight.

• Texture: Medium to coarse.

• Defects: Oily wood with calcareous and silica deposits.

Impregnation

• Sapwood: Poorly permeable
• Heartwood: Not permeable

Mechanization

• Sawing: No major problems other than its high silica content, which quickly wears down tools and causes allergies in workers.

• Drying: Slow to very slow drying rate. Minor risk of warping and cracking.

• Planing: No major problems other than its abrasiveness. Suitable for bending.

• Gluing: High difficulty due to its high oleoresin content, especially when using alkaline glues.

• Nailing and screwing: Requires pre-drilling.

• Finishing: The same difficulties as mentioned for gluing.

Applications

• Fine interior and, especially, exterior furniture and joinery. Bent and turned furniture.

• Interior and, especially, exterior carpentry; doors, windows, flooring, and paneling.

• Shipbuilding.

• Decorative veneers.

Mechanical properties

• Static bending strength: 1,020 kg/cm²

• Modulus of elasticity: 110,000 kg/cm²
• Compressive strength parallel to the axis: 630 kg/cm²

To be considered

The photos are of Asian teak.
In some African and South American countries, there are plantations of trees of this species. Because it is fast-growing, with widely spaced growth rings, its characteristics and performance are inferior; it has less fat, so its resistance to the elements is lower, and it has wide, dark fronds.

Notes






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