Cumaru-ROSA

 In Wood Species, Floors

Cumaru-ROSA

Dipteryx sp
Other names:
Camaru, camaru-ferro, cambaru, cambaru-ferro, champanha, cumaru-amarelo, cumaru-da-folha-grande and cumaru-ferro.
General features:
Heartwood and sapwood distinct by color; moderate brightness; imperceptible smell and taste; high density; hard to cut; reverse grain; fine to medium texture, attenuated fibrous appearance; slightly glossy surface.
Durability and Treatment:
Natural durability: the heartwood is highly resistant to attack by xylophagous organisms (rotting fungi and termites). In field trials with cuttings in contact with the soil, this species showed high durability to xylophagous organisms and was considered with a durability of more than 12 years of service in contact with the soil. It also showed low resistance, to marine xylophagous in another field trials. It is impermeable to preservative solutions; the heartwood is not treatable with creosote (soluble oil) nor with CCA (water-soluble) even under pressure.
Processing Characteristics:
Cumaru-rosa wood is difficult to work with, but receives excellent finishing in turning. Poor finish in planer and sandpaper jobs, and it is difficult to drill. Due to the oily nature, the wood presents difficulty in being glued. Accepts polish, paint, varnish and burnish. It is relatively easy to dry in the air, with a slight tendency to crack superficially, presents moderate warpage. Artificial drying is slow, but practically free of defects.
Physical properties

Mass Density – Apparent at 15% humidity: 1090 kg/m3 / Basic: 908 kg/m3

Shrinkage – Radial: 5.3% / Tangential: 8.2% / Volumetric 13.6%

Applications

Construction:
• External heavyweight: bridges, poles, posts, stakes, cross-ties, railroad tie
• Internal heavyweight: beams, rafters
• Internal lightweight, frames: stops
• Internal lightweight decorative: linings, wainscoting

Floors:
• Sticks
• Boards
• Parquets
• Stair Steps

Furniture:
• High quality: decorative pieces of furniture

Other uses:
• Tool Cables
• Transport
• Boats

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