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Kauvula
Kauvula (Endospermum macrophyllum)

Family: Euphorbiaceae

Common names: Ekor belangkas, Gubas, Kauvula, Sendok sendok, Sesendok, Terbulan

Distributed in: Fiji [Polynesia], Fiji (Oceania and S.E. Asia)

Distribution overview: Fiji, in particular.

Common uses: Agricultural implements, Balusters, Bedroom suites, Boxes and crates, Broom handles, Building construction, Building materials, Cabinetmaking, Carvings, Chairs, Chests, Coffins, Concealed parts (Furniture), Construction, Core Stock, Decorative plywood, Decorative veneer, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Factory flooring, Figured veneer, Fine furniture, Floor lamps, Flooring, Food containers, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Interior construction, Interior trim, Joinery, Kitchen cabinets, Light construction, Living-room suites, Matches, Millwork, Moldings, Musical instruments, Office furniture, Paneling, Parquet flooring, Plain veneer, Plywood, Pulp/Paper products, Tool handles, Toys, Turnery, Veneer

Environment profile: Vulnerable

Tree size: Trunk diameter is 350-400 cm

Colors: the heart isWhite to cream, Yellow to golden-yellow to orangeand the sapwoodWhite, Yellow.The grain isStraight, the textureMedium to coarseand the lusterMedium

Natural durability: Susceptible to pinhole borer, Very little natural resistance

Odor: No specific smell or taste

Kiln Schedules: Drying (speed) is fast

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Splitting, Warping can be expected

Ease of Drying: Variable

Tree Identification: Bole/stem form is buttressed

Comments: Abnormal Wood Tissue - Tension wood may be present in timber from leaning or crooked trees.General finishing qualities are rated as good

Blunting Effect: Moderate

Boring: Fairly easy to very easy

Carving: Very good results

Cutting Resistance: Low resistance

Gluing: Fairly Easy to Very Easy

Mortising: good

Moulding: Moulds well and readily

Movement in Service: Moulds well and readily

Nailing: Nails hold poorly, Very Good to Excellent

Planing: Planes to a smooth surface

Resistance to Impregnation: Resistant sapwood

Resistance to Splitting: Poor

Response to hand tools: Responds well

Routing recessing: Very good in both routing and recessing

Sanding: Yields smooth, clean surfaces

Veneering qualities: Veneers easily, Veneers moderately easy

Steam bending: Unsuitable

Screwing: Fairly Easy to Very Easy, Very Good to Excellent Results; Turning: Very good

Painting: Fairly Easy to Very Easy; Polishing: Very Good to Excellent; Staining: Very Good to Excellent; Varnishing: Fairly Easy to Very Easy;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,34 0,41
Density 496 kg/m3
Bending Strength 486 741 kg/cm2
Crushing Strength 35 63 kg/cm2
Hardness 295 kg
Impact Strength cm
Shearing Strength 92 kg/cm2
Stiffness 100 110 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 2 %
Weight 448 400 kg/m3
Maximum Load cm-kg/cm3
Toughness 92 cm-kg
Static Bending 284 449 kg/cm2
Item Green Dry English
Bending Strength 6918 10540 psi
Crushing Strength 505 902 psi
Density 31 lbs/ft3
Hardness 652 lbs
Maximum Crushing Strength 3800 6419 psi
Shearing Strength 1315 psi
Static Bending 4047 6399 psi
Stiffness 1434 1565 1000 psi
Toughness 80 inch-lbs
Specific Gravity 0.34 0.41
Weight 28 25 lbs/ft3
Radial Shrinkage 2 %
Tangential Shrinkage 5 %

Density (dry weight) = 31-37 lbs/cu. ft. 0
Max. crushing strength = medium 1
Bending strength (MOR) = low 1
Modulus of Elasticity (stiffness) = low
Shrinkage, Radial = very small
Shearing strength (parallel to grain) = low
Shrinkage, Tangential = small
Shrinkage, Tangential = very small
Shearing strength (parallel to grain) = very low
Modulus of Elasticity (stiffness) = very low
Density (dry weight) = 23-30 lbs/cu. ft.
Modulus of Elasticity (stiffness) = medium

Alston, A.S.,1966,Natural Heartwood Durability,Fiji Forestry Department, Suva. Fiji timbers and their uses No. 2Alston, A.S.,1966,Powder Post Beetle Lyctus Species,Fiji Forestry Department, Suva. Fiji timbers and their uses No.6Bolza, E., Kloot, N.H.,1972,The Mechanical Properties of 56 Fijian Timbers,Australia C.S.I.R.O. Division of Forest Products Technological Paper,No.,62Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Fiji Department of Forestry,1969,A Summary of the Properties of 34 Indigenous Timbers,Fiji Forestry Department, Suva. Fiji timbers and their uses No.38Fiji Department of Forestry,1972,Guide to the use of local timbers,Fiji Forestry Department, Suva. Fiji timbers and their uses No.55Fiji Forestry Department,1967,The Properties and Potential Uses of Buabua (Fagraea gracilipes) A Summary,of C.S.I.R.O. Investigations,Fiji Timbers and their Uses No. 14, Department of Forestry, Suva, FijiFiji Forestry Department,1967,The Properties and Potential Uses of Kauvula (Endospermum macrophyllum) A,Summary of C.S.I.R.O. Investigations,Fiji Timbers and their Uses No.19, Department of Forestry, Suva, FijiFiji Forestry Department,1969,Timbers for Flooring A Note on Current & Potential Species,Fiji Timbers and their Uses No.36, Department of Forestry, Suva, FijiFiji Forestry Department,1981,The Properties and Uses of 43 Indigenous and Exotic Timbers,Fiji Forestry Department, Fiji Timbers and their Uses No.71Keating, W.G., Bolza, E.,1982,Characteristics properties and uses of timbers. South East Asia, Northern,Australia and the Pacific,C.S.I.R.O. Div. Chemical Technology,Inkata Press,1Smitinand, T., Et al,1980,A Manual of Diplerocarpaceae of Mainland South-East Asia,Forest Department, Thailand
*Come interpretare i dati (manleva su eventuali imprecisioni)