Gubas (Endospermum spp.)
Family: Euphorbiaceae
Common names: Ekor belangkas, Gubas, Kauvula, Sendok sendok, Sesendok, Terbulan
Distributed in: Fiji, Indonesia, Malaysia, Philippines (Oceania and S.E. Asia)
Distribution overview: Malaya, Philippines, New Guinea, Fiji and other western Pacific islands. Common in lowland forests, especially in secondary growth (Malaya).
Common uses: Balusters, Bent Parts, Boxes and crates, Building construction, Building materials, Cabinetmaking, Carvings, Casks, Chairs, Chests, Construction, Decorative plywood, Desks, Dining-room furniture, Drawer sides, Excelsior, Fine furniture, Furniture , Furniture components, Furniture squares or stock, Hatracks, Interior construction, Joinery, Kitchen cabinets, Light construction, Living-room suites, Matchboxes, Matches, Moldings, Office furniture, Packing cases, Plywood, Radio - stereo - TV cabinets, Rustic furniture, Stairworks, Stools, Stringers, Utility furniture, Wardrobes, Wooden shoes, Woodwork
Product sources: Supplies from Fiji are available in very limited quanties on the European market. The wood is considered too soft for general joinery work, but it is well suited for small accurate mouldings. Prices are in the same range as those of lower cost hardwoods.
Environment profile: Status has not been officially assessed
Tree size: Trunk diameter is 300-350 cm
Colors: the heart isRed, Straw coloredand the sapwoodWhite, Yellow.The grain isStraight to interlocked, the textureMediumand the lusterMedium
Natural durability: Susceptible to insect attack, Very little natural resistance
Odor: No specific smell or taste
Kiln Schedules: Schedule J (4/4) United Kingdom
Kiln Drying Rate: Naturally dries slowly
Drying Defects: Splitting, Warping can be expected
Ease of Drying: Slowly
Comments: Abnormal Wood TissueTension wood may be present
Blunting Effect: Moderate
Boring: Fairly easy to very easy
Carving: Fairly Easy to Very Easy
Cutting Resistance: Easy to saw
Gluing: Fairly Easy to Very Easy
Moulding: Fairly Easy to Very Easy
Movement in Service: Fairly Easy to Very Easy
Nailing: Fairly Easy to Very Easy, Very Good to Excellent
Planing: Fairly Easy to Very Easy
Resistance to Impregnation:
Easily treated, using the open tank or pressure systems
Response to hand tools: Responds Readily
Routing recessing: Fairly Easy to Very Easy
Veneering qualities: Veneers easily, Veneers moderately easy
Turning: Very Good to Excellent Results
Polishing: Good;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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 |
 |
 |
| Item |
Green |
Dry |
Metric |
| Specific Gravity |
|
|
|
| Density |
|
464 |
kg/m3 |
| Bending Strength |
523 |
7779 |
kg/cm2 |
| Crushing Strength |
35 |
63 |
kg/cm2 |
| Hardness |
|
295 |
kg |
| Impact Strength |
|
|
cm |
| Shearing Strength |
|
87 |
kg/cm2 |
| Stiffness |
104 |
108 |
1000 kg/cm2 |
| Tangential Shrinkage |
|
|
% |
| Radial Shrinkage |
|
|
% |
| Weight |
|
|
kg/m3 |
| Maximum Load |
|
|
cm-kg/cm3 |
| Toughness |
|
92 |
cm-kg |
| Static Bending |
284 |
449 |
kg/cm2 |
|
 |  |  |  | | Item | Green | Dry | English | | Bending Strength | 7448 | 110651 | psi | | Crushing Strength | 505 | 902 | psi | | Density | | 29 | lbs/ft3 | | Hardness | | 652 | lbs | | Maximum Crushing Strength | 3536 | 6184 | psi | | Shearing Strength | | 1245 | psi | | Static Bending | 4047 | 6399 | psi | | Stiffness | 1490 | 1539 | 1000 psi | | Toughness | | 80 | inch-lbs | | Specific Gravity | 0.34 | | | |
Surfaces may dent easily Soft Compression strength (parallel to grain) = medium Bending strength (MOR) = high
Bolza, 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.,62British Woodworking Federation. 1995. Which Wood . Published by the British Woodworking Federation, Broadway House, Tothill Street, London.Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.
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