Bosse
Botanical name
Guarea cedrata
Origin
Africa
Other names
Ebangbemwa, Nindiakat, Bosse, Mutigbanaye, Ossoung, Guarea, Kwabohoro, Bolon, Obobo Nekwi, Obobo Nofua, N' Zombou, Bosasa, Diambi, Black Guarea, Scented Guarea
Notes
G. cedrata and G. laurentii are called light BOSSE; G. thompsonii is called dark BOSSE.
WOOD DESCRIPTION
| Color: |
pinkish brown |
| Sapwood: |
clearly demarcated |
| Texture: |
fine |
| Grain: |
interlocked |
| Interlocked grain: |
slight |
| Note: |
Irregular or wavy grain. G.thompsonii presents a straighter grain. It is also almost floatable. Wood pinkish brown (G. cedrata) |
PHYSICAL, MECHANICAL AND ACOUSTIC PROPERTIES
|
(*: at 12% moisture content, with 1 MPa = 1 N/mm²) Musical quality factor: 120,6 measured at 2475 Hz |
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NATURAL DURABILITY AND TREATABILITY
| Funghi (according to E.N. standards): |
class 2 - durable |
| Dry wood borers: |
durable - sapwood demarcated (risk limited to sapwood) |
| Termites (according to E.N. standards): |
class S - susceptible |
| Treatability (according to E.N. standards): |
class 4 - not permeable |
| Use class ensured by natural durability: |
class 3 - not in ground contact, outside |
| Species covering the use class 5: |
No |
| Note: |
This species is listed in the European standard NF EN 350-2. Light Bossé has a moderate resistance to fungi. Dark Bossé is durable. According to the European standard NF EN 335, performance length might be modified by the intensity of end-use exposition. |
SAWING, MACHINING AND ASSEMBLING
| Blunting effect: |
fairly high |
| Sawteeth recommended: |
stellite-tipped |
| Cutting tools: |
tungsten carbide |
| Peeling: |
good |
| Slicing: |
nood |
| Note: | The silica content of G.cedrata can be high to very high. Irritant sawdust. |
| Nailing / screwing: |
good |
| Gluing: |
correct |
| Note: |
Pre-boring may be necessary for G.thompsonii due to its hardness. Gluing G. cedrata may be difficult due to resin exudations. |
