Brush mahogany (Geissois benthami)
Family: Cunoniaceae
Common names: Brush mahogany, Leatherjacket, Marara, Mountain cedar, Red bean, Red carabeen, Red carrabeen, Red carrobean, Tile seed
Distributed in: Australia (Oceania and S.E. Asia)
Common uses: Boxes and crates, Brush backs & handles, Cabinetmaking, Flooring, Furniture, Handles: general, Heavy construction, Joinery, Light construction, Plywood, Turnery, Veneer, Veneer: decorative
Colors: the heart isRed, Reddish brownand the sapwoodWhite to yellow, Yellow.The grain isWeak figure, the textureFine
Natural durability: Non-resistant to marine borers, Susceptible to attack from powder post (Lyctid & Bostrychid) beetles
LightInduced Color Change: Lighter
Kiln Schedules: Kiln Drying Rate (in days) is rapid
Kiln Drying Rate: Rapid (<10 days for boards < 32 mm, to <30 days for boards >= 63 mm)
Drying Defects: Moderate twist/warp, Slight collapse and honeycomb
Ease of Drying: Reconditioning Treatement
Tree Identification: Bole/stem form is buttressed
Comments: General finishing qualities are rated as good
Blunting Effect: Little
Boring: Fairly easy to very easy
Carving: Fairly Easy to Very Easy
Cutting Resistance: Easy to saw
Mortising: Fairly Easy to Very Easy
Moulding: Fairly Easy to Very Easy
Movement in Service: Fairly Easy to Very Easy
Nailing: Easy to nail
Planing: Very Good to Excellent
Resistance to Impregnation: Resistant sapwood
Response to hand tools: Responds Readily
Routing recessing: Routing is difficult
Sanding: Fairly Easy to Very Easy
Turning: Fairly Easy to Very Easy
Polishing: Fair to Good;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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Item |
Green |
Dry |
Metric |
Specific Gravity |
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Density |
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641 |
kg/m3 |
Bending Strength |
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kg/cm2 |
Crushing Strength |
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kg/cm2 |
Hardness |
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kg |
Impact Strength |
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cm |
Shearing Strength |
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kg/cm2 |
Stiffness |
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1000 kg/cm2 |
Tangential Shrinkage |
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% |
Radial Shrinkage |
5 |
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% |
Weight |
624 |
496 |
kg/m3 |
Maximum Load |
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cm-kg/cm3 |
Toughness |
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cm-kg |
Static Bending |
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kg/cm2 |
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| | | | Item | Green | Dry | English | Density | | 40 | lbs/ft3 | Weight | 39 | 31 | lbs/ft3 | Radial Shrinkage | 5 | | % | Tangential Shrinkage | 9 | | % | |
Density (dry weight) = 38-45 lbs/cu. ft. Shrinkage, Tangential = large Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate Shrinkage, Radial = large Shrinkage, Radial = fairly large
Anderson, R.H.,1947,The Trees of New South Wales,New South Wales Department of AgricultureAudas, J.W.,Native Trees of Australia,Whitcombe & Tombs PTY. LtdAustralia - N.S.W. Forestry Commission,1968,Working Properties of some Native and Imported Timbers,Forestry Commission of New South Wales, Technical Publication No.8Australia - N.S.W. Forestry Commission,1988,Furniture Timbers of New South Wales,Forest Commission, N.S.W., Aust. Tech. Publication No.1Boas, I.H.,1947,The Commercial Timbers of Australia - Their Properties and Uses,Council for Scientific and Industrial Research, MelbourneBootle, K.R.,1971,The Commercial Timbers of New South Wales and their use,Angus & Robertson (publishers) PTY LtdFrancis, W.D.,1951,Australian Rain-forest Trees,Commonwealth of Australia - Forestry and Timber Bureau
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