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Clicking any heading in the main data area (at right) will scroll the page back to this top position. Use the following links to jump to the associated section in the main data. Blunting Effect Boring Certified Source Comments Common Names Common Uses Countries of Distribution Cutting Resistance Distribution Overview Drying Defects Ease of Drying Environmental Profile Family Name Gluing Grain Heartwood Color Kiln Drying Rate Kiln Schedules Luster Mortising Moulding Movement in Service Nailing Natural Durability Natural Growth Defects Numerical Data Odor Planing Polishing Product Sources References Regions of Distribution Resistance to Impregnation Response to Hand Tools Routing & Recessing Sanding Sapwood Color Scientific Name Screwing Silica Content Staining Steam Bending Strength Properties Texture Trade Name Tree Identification Tree Size Turning Veneering Qualities Scientific Name Dacryodes buettneri Trade Name Adjouaba Family Name Burseraceae Common Names Adjouaba, Assa-mingoug, Assia, Essassia, Igaganga, Massikou, Mouguengueri, Mouzighou, Musiku, N'sikou, Nkala, Osighou, Osogho, Ossabel, Ossamvegna, Ozigo, Safoukala, Safunkala, Samveien, Tchibudimbu Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Cameroon, Congo, Equatorial Guinea, Gabon Common Uses Balusters, Bedroom suites, Boat building (general), Boxes and crates, Building construction, Building materials, Cabinetmaking, Chairs, Chests, Concealed parts (Furniture), Construction, Decorative plywood, Decorative veneer, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Figured veneer, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Interior construction, Joinery (external): ground contact, Joinery, Kitchen cabinets, Light construction, Living-room suites, Millwork, Moldings, Office furniture, Parquet flooring, Plywood, Poles, Posts, Pulp/Paper products, Radio - stereo - TV cabinets, Railroad ties, Rustic furniture, Shipbuilding, Stairworks, Stools, Stringers, Tables, Vats, Vehicle parts, Veneer: decorative Environmental Profile Abundant/Secure Secure within its range Data source is World Conservation Monitoring Center Distribution Overview Probably in West Africa and mainly in rain forests. Heartwood Color Brown Purple Black Red Yellow Orange Greenish to greyish Pale red to pink Pale brown Yellow to golden-yellow to orange Gray buff Sapwood Color Yellow White Pink Red Same as heartwood Color not distinct from heartwood Grain Interlocked Distinct (figure) Figure Even Straight Closed Interlocked Distinct figure Straight Texture Medium Coarse Fine Even or uniform Medium to coarse Fine to medium Medium Coarse Luster Low Medium Lustrous Occaisonally lustrous Natural Growth Defects Gum ducts in timber Natural Durability Very durable Susceptible to insect attack Resistant to termites Non-resistant to powder post beetles Durable Moderately durable Non durable Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Susceptible to attack from termites (Isoptera) Susceptible to marine borer attack Resistant to attack from powder post (Lyctid & Bostrychid) beetles Pinworms (ambrosia beetles) are commonly present Susceptible to attack by marine borers and termites Resistant to attack from marine borers Perishable Moderately durable Odor Has an odor No specific smell or taste Silica Content Likely to have significant impact on machining Kiln Schedules Dry at a slow speed Drying (speed) is fast Drying Defects Checking Splitting Extension of Existing Shakes Moderate surface checking Ease of Drying Fairly Easy Rapidly Slowly End-Coating Difficult Easy Kiln Drying Rate Naturally dries slowly Naturally dries quickly Naturally dries at a moderate speed Slow Very slow Drying rate is slow Tree Identification Bole/stem form is straight Bole/stem form is not buttressed Bole/stem form is cylindrical Bole/stem form is buttressed Tree Size Trunk diameter is 150-200 cm Trunk diameter is 100-150 cm Tree height is 20-30 m Bole length is 10-20 m Bole length is 0-10 m Tree height is 40-50 m Tree height is 30-40 m Bole length is 20-30 m Tree height is 10-20 m Bark width is 5-10 mm Bark width is 0-5 mm Product Sources The ITTO reports that the species is a regular source of timber for exportation. Certified Source Certified Source Comments General finishing qualities are rated as good Blunting Effect High to severe Moderate Blunting effect on machining is severe Blunting effect on cutting edges may be rather severe. Boring Fairly difficult to very difficult Cutting Resistance Fairly Difficult to Very Difficult to saw Easy to saw Cutting Resistance with dry wood is easy Cutting Resistance with dry wood is difficult Gluing Fairly Easy to Very Easy Fair to Good Results Easy to glue Difficult to glue A good jointing timber. Mortising Fairly Easy to Very Easy Fairly Difficult to Very Difficult Difficult to mortise Moulding Fairly Easy to Very Easy Very Good to Excellent Results Fairly Difficult to Very Difficult Fair to Good Results Difficult to mould Poor moulding results Movement in Service Excellent Stability - Small Movement Shape retention after manufacture is usually good Nailing Fairly Difficult to Very Difficult Fair to Good Results Easy to nail Holds nails well Planing Fair to Good Results Fairly Difficult to Very Difficult Very Good to Excellent Results Difficult to plane Planes to a poor finish Easy to use machine tools A reduced cutting angle of 15 degrees is suggested to prevent pick-up in planing Resistance to Impregnation Resistant heartwood Resistant sapwood Permeable sapwood Heartwood is resistant Resistant Heartwood is very resistant Response to Hand Tools Easy to Work Fairly Difficult to Difficult to Work Easy to machine Difficult to machine Routing & Recessing Fairly Difficult to Very Difficult Sanding Fairly Easy to Very Easy Fair to Good Results Screwing Fairly Easy to Very Easy Poor to Very Poor Results Very Good to Excellent Results Fairly Difficult to Very Difficult Fair to Good Results Screwing yields good results Good screw holding properties Easy to screw Turning Fairly Easy to Very Easy Very Good to Excellent Results Fair to Good Results Fairly Difficult to Very Difficult Veneering Qualities Suitable for peeling Veneers easily Suitable for slicing Veneers moderately easy There is slight to moderate drying degrade and the potential for buckles and splits Suitable for slicing Suitable for peeling Moderately easy to veneer Difficult to glue Steam Bending Fair to Good Results Polishing Fair to Good Results Very Good to Excellent Results Surface Preparation Good results Staining Fair to Good Results Very Good to Excellent Results Surface Preparation Strength Properties Max. crushing strength = medium Hardness (side grain) = soft Shrinkage, Volumetric = fairly large Shrinkage, Tangential = moderate Shrinkage, Radial = fairly large Bending strength (MOR) = medium