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Bubinga (Guibourtia demeusei)
Family: Leguminosae Common names: Akume, Bubinga, Buvenga, Cameroons gum copal, Eban, Ebana, Essingang, Gabon kevazingo, Gum copal, Irun-nduk, Kasasesase, Kevazingo, Lianu, Lukunfu, Lusase, Mutenye, Ngulupang, Okweni, Ovang, Oveng, Waka, Waku Distributed in: Cameroon, Central African Republic, Congo, Equatorial Guinea, Gabon, Liberia, Nigeria, South Africa, Uganda, Zaire (Africa) Distribution overview: Central and north Africa (Cameroon, Gabon) and usually found scattered in open savannah woodland among other species. Common uses: Agricultural implements, Boat building (general), Boat building, Boxes and crates, Brush backs & handles, Cabinetmaking, Canoes, Carvings, Chairs, Chests, Concealed parts (Furniture), Decorative veneer, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Figured veneer, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Furniture, Handles, Hatracks, Heavy construction, Interior construction, Joinery, Kitchen cabinets, Lifeboats, Light construction, Living-room suites, Millwork, Mine timbers, Moldings, Musical instruments, Office furniture, Paneling, Parquet flooring, Plywood, Radio - stereo - TV cabinets, Railroad ties, Rustic furniture, Shafts/Handles, Shipbuilding, Stairrails, Stairworks, Stools, Stringers, Sub-flooring, Tables , Tool handles, Turnery, Utility furniture, Vehicle parts, Veneer, Veneer: decorative Product sources: The ITTO reports that the species is a regular source of timber for export. Environment profile: Status unsure as a result of insufficient information Tree size: Tree height is 30-40 m
Colors: the heart isReddish brown, Yellowand the sapwoodWhite to yellow, Yellow.The grain isWavy, the textureMedium coarse to coarseand the lusterLow
Natural durability: Susceptible to attack from termites (Isoptera), Very durable Odor: No specific smell or taste
Silica Content: Likely to have significant impact on machining Kiln Schedules: T2 - C2 (4/4); T2 - C1 (8/4) US Kiln Drying Rate: Naturally dries quickly
Drying Defects: Slight end splitting, Slight surface checking Ease of Drying: Reconditioning Treatement Tree Identification: Bole/stem form is straight Comments: General finishing qualities are rated as good The trade name 'Kevazingo' is reserved for rotary-cut veneers which display the exotic coloring of Bubinga to the best advantage Blunting Effect: High to severe Boring: Fairly easy to very easy Carving: Good carving characteristics Cutting Resistance: Low cutting resistance Gluing: Easy to glue Mortising: Fairly Easy to Very Easy Moulding: Fairly Easy to Very Easy Movement in Service: Fairly Easy to Very Easy Nailing: Good nailing qualities, Holds nails well Planing: Special attention suggested for best Resistance to Impregnation: Sapwood is moderately resistant Response to hand tools: Good response to hand tools Routing recessing: Good in both routing and recessing. Sanding: Very good response to sanding Veneering qualities: Various figures can yield decorative veneers
Some logs, mainly from Gabon, are highly figured and are converted into attractive veneers for decorative applications such as, panelling, inlay work, high class furniture, and fancy turnery work
Screwing: Possible if prebored
; Turning: Good results
Polishing: Very Good to Excellent; Staining: Finish is generally satisfactory;
Shrinkage, Tangential = large Shrinkage, Radial = fairly large Bending strength (MOR) = high Max. crushing strength = high Shrinkage, Volumetric = moderate Shrinkage, Volumetric = large Shrinkage, Radial = large Modulus of Elasticity (stiffness) = medium Hardness (side grain) = very hard Density (dry weight) = 53-60 lbs/cu. ft Density (dry weight) = 46-52 lbs/cu. ft. Bending strength (MOR) = very high Shrinkage, Volumetric = fairly large Shrinkage, Tangential = moderate Shrinkage, Tangential = fairly large Shearing strength (parallel to grain) = medium Shearing strength (parallel to grain) = low Max. crushing strength = very high Shrinkage, Tangential = small Shearing strength (parallel to the grain) = very high Modulus of Elasticity (stiffness) = very high Max. crushing strength = medium Hardness (side grain) = medium Hardness (side grain) = hard Density (dry weight) = 61-67 lbs/cu. ft Bending strength (MOR) = medium Bois et Forets des Tropiques,1949,Bubinga (Guiboutia spp,Bois et Forets des Tropiques,No.12,pp429-432Bois et Forets des Tropiques,1977,Bubinga (Guibourtia spp,Bois et Forets des Tropiques,No.173, pp23-35Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchEdlin, H.L. 1969. What Wood is That?: A Manual of Wood Identification. A Studio Book, The Viking Press, New York.Edlin, H.L.,1969,What wood is that? A Manual of Wood Identification,Jarrold and Sons Ltd. NorwichErfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry DepartmentFarmer, R.H.,1972,Handbook of Hardwoods,HMSOFrance - C.T.F.T.,1961,Resultats des Observations et des Essais effectues au C.T.F.T. sur Bubinga,(Guibourtia spp.,C.T.F.T.,Information Tec.,No.118France - C.T.F.T.,1966,Bois Tropicaux,C.T.F.T. Publ.,12HMSO.1972.Handbook of Hardwoods.2nd Edition.Revised by R.H. Farmer.Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Princes Risborough, Aylesbury, Buckinghamshire.Hughes, J.F.,1971,The Principal Timber Trees of Cameroon,Unpublished dataITTO.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.Jackson, A. and D. Day.1991.Good Wood Handbook - The Woodworker's Guide to Identifying, Selecting and Using the Right Wood.Betterway Publications, Cincinnati, Ohio.Jay, B.A.,1968,Timbers of West Africa,TRADA, Red Booklet SeriesLebacq, L., Dechamps, R.,1967,Contribution a un Inventaire de Forets du Nord-kasai,Musee Royal de L'Afrique Centrale Belgium Annals Series 8 No.5Lincoln, W.A. 1986. World Woods in Color. Linden Publishing Co. Inc., Fresno, California.Organisation for European Economic Co-operation,1951,African Tropical Timber (Nomenclature, Description,OEECPerrot, E.,1921,Les Bois du Gabon,Larose ParisPieters, A.,1977,Essences Forestieres du Zaire,R.U.G. Gent BelguimRendle, B.J. Editor. 1969. World Timbers, Volume One - Europe & Africa. Published by Ernest Benn Limited, Bouverie House, Fleet Street, London.Rendle, B.J.,1969,World Timbers (3 Vols.,Ernest Benn Ltd. LondonSaint-Aubin, G. de,1963,La Foret du Gabon,CTFT Publ., No.21Sallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.TSallenave, P.,1964,Proprietes Physiques et Mecaniques des Bois Tropicaux (Premier Supplement,C.T.F.T. Publ.,no.23Sallenave, P.,1971,Proprietes Physiques et Mecaniques des Bois Tropicaux (Deuxieme,Supplement,C.T.F.T.Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7Unwin, A.H.,1920,West African Forests and Forestry,T. Fisher Unwin Ltd. London |
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