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Onzabili (Antrocaryon micraster)
Family: Anacardiaceae Common names: Akoua, Angonga, Anguekong, Antrocaryon, Aprokuma, Bougongi, Ha okete, Ha-okete, Kuminimba, Mongongo, Mugongo, Mumbu, Ngongo, Onzabili, Tshikosokoso, Tshimanya, Tshimumbu, Tshinsono, Tshitoke Distributed in: Angola, Cameroon, Gabon, Ghana, Guinea, Ivory Coast, Liberia, Sierra Leone, Uganda, Zaire (Africa) Distribution overview: Cameroon, Cd'Ivoire, DR Congo, Ghana, Nigeria, Sierra Leone, and Uganda. This species is found in lowland tropical rainforest. Common uses: Boxes and crates, Building materials, Cabinetmaking, Carvings, Casks, Chairs, Chests, Concealed parts (Furniture), Decorative plywood, Desks, Dining-room furniture, Door, Dowell pins, Dowells, Drawer sides, Excelsior, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Interior construction, Interior trim, Joinery, Kitchen cabinets, Light construction, Living-room suites, Moldings, Office furniture, Packing cases, Particleboard, Plywood corestock, Plywood, Pulp/Paper products, Radio - stereo - TV cabinets, Rustic furniture, Stools, Structural plywood, Tables , Utility furniture, Utility plywood, Veneer: decorative, Wardrobes Product sources: Apart from timber, the tree is of value primarily to the natives of Indo-Malaya as a source of one of the ingredients for their dart poison, and for bark cloth. Environment profile: No threat in the near future Tree size: Trunk diameter is 150-200 cm
Colors: the heart isWhite, White to creamand the sapwoodWhite to yellow, Yellow.The grain isStraight, the textureMedium-Textured and the lusterMedium
Natural durability: Susceptible to marine borer attack, Very little natural resistance to decay in ground contact Odor: No specific smell or taste
Drying Defects: Rather large shrinkage , Slight tendency to distort and check Ease of Drying: Medium to High Shrinkage Tree Identification: Bole/stem form is straight Comments: General finishing qualities are rated as good Blunting Effect: Slight to moderate blunting effect on cutters Boring: Fairly easy to very easy
Carving: Fairly Easy to Very Easy
Cutting Resistance: Low resistance to sawing Gluing: Good gluing properties Mortising: Fairly Easy to Very Easy
Moulding: Fairly Easy to Very Easy
Movement in Service: Fairly Easy to Very Easy
Nailing: Nails without pre-boring , Very Good to Excellent Planing: Works well with both hand and machine tools in most machining operations Resistance to Impregnation: Resistant sapwood Response to hand tools: Easy to machine Routing recessing: Fairly Easy to Very Easy
Screwing: Screwing yields good results, Very Good to Excellent Results; Turning: Fairly Easy to Very Easy
Polishing: Surface Preparation;
Shrinkage, Volumetric = fairly large Shrinkage, Radial = moderate Shrinkage, Tangential = moderate Max. crushing strength = medium Bending strength (MOR) = medium Hardness (side grain) = very soft Modulus of Elasticity (stiffness) = low Density (dry weight) = 31-37 lbs/cu. ft. Bending strength (MOR) = very high Bending strength (MOR) = low Shrinkage, Volumetric = small Shrinkage, Volumetric = moderate Shrinkage, Tangential = large Shrinkage, Tangential = fairly large Shrinkage, Radial = large Shrinkage, Radial = fairly large Shearing strength (parallel to grain) = very low Shearing strength (parallel to grain) = low Modulus of Elasticity (stiffness) = very low Max. crushing strength = low High in density Compression strength (parallel to grain) = high Bending strength (MOR) = high It is far stronger, for example, than Hard maple, White oak, or Teak. Strength in compression parallel to grain is in the high range. Other species in this range include Teak, White oak, and Hard maple Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchEggeling, W.J.,1940,Indigenous Trees of Uganda,Govt. Printer Entebbe UgandaErfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry DepartmentFouarge, J., Gerard, G.,1964,Bois du Mayumbe,I.N.E.A.C. BelguimFouarge, J.,1950,Appropriation de Bois Congolais aux Besoins de la Metropole,I.N.E.A.C. Belgium Serie Technique,No.38France - C.T.F.T.,Resultats des observations et des essais effectives au C.T.F.T. sur,Onzabili - Antrocanyon klaineanum et Antrocanyon micraster,C.T.F.T. Information Technique No.129Ghana - Timber Marketing Board,1969,Ghana Hardwoods,Timber Marketing BoardITTO.1986.Tropical Timber Atlas, Volume 1 - Africa.International Tropical Timber Organization (ITTO) and Centre Technique Forestier Tropical (CTFT, 45bis, Avenue de la Belle Gabrielle, Nogent-sur-Marne Cedex, France.Keay, R.W.J.1989. Trees of Nigeria.Revised Version of Nigerian Trees. Clarendon Press, Oxford.Kryn, J.M., Forbes, E.W.,1959,The Woods of Liberia,U.S.A. Department of Agriculture,Forest Products Laboratory, Madison,,Report No. 2159Lebacq, L., Dechamps, R.,1967,Contribution a un Inventaire de Forets du Nord-kasai,Musee Royal de L'Afrique Centrale Belgium Annals Series 8 No.5Pieters, A.,1977,Essences Forestieres du Zaire,R.U.G. Gent BelguimSallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.TTakahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7WCMC.1992.Conservation Status Listing - Trees and Timbers of the World.World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom. |
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