Gabarro

Bosse

Scientific name: Guarea cedrata Pellegr.; G. laurentii De Wild.

Geographic origin: Africa.

Bosse
Description

  • Sapwood: light brown.
  • Heartwood: pink brown.
  • Fiber: straight, occasionally slightly intertwined.
  • Grain: thin to medium size.

Capacity of being impregnated

  • Sapwood: capable of being impregnated.
  • Heartwood: no capable of being impregnated.

Mechanization

  • Sawing process: easy, except in the presence of silica, a situation that causes fast wear of saws and irritating dust.
  • Drying process: medium speed. Medium risk of deformation and crack formation.
  • Planing process: no difficulties excepting those named cases of silica and the risk of repelling on pieces of intertwined wood.
  • Gluing process: no difficulties.
  • Nailing and screwing process: no difficulties.
  • Finish: no difficulties, except in case of resin exudations , they can be usual .

Physical properties

  • Apparent density at 12% humidity 600 kg/m3 fom semi-light wood to semi-heavy wood.
  • Dimensional stability
  • - Volumetric contraction coefficient 0.43 % variation from stable wood to slightly nervous wood.
  • - Relation between contractions 1.61 no tendency to deformity.
  • Hardness (Chaláis-Meudon) 3.6 semi-hardwood.

Bosse
Mechanical properties

  • Resistance to static flexion 1.100 kg/cm2.
  • Elasticity module 109.000 kg/cm2.
  • Resistance to compression 510 kg/cm2.

Bosse
Observations

  • Light Sapwood colour and dark heartwood.
  • It is sometimes wrongly called Cedar.
  • There are important colour differences deppending on its origin.
  • It has a very pleasant smell of cedar, as its name indicates, but over time disappears.