BINTANGOR Calophyllum spp.

USES

Building construction (F17); including framing, bearers, joists. Flooring; light traffic (domestic). Furniture; production line. Interior; including mouldings, architraves.

● The timber is popular in Japan for a variety of end uses including furniture manufacture and cabinet work as well as for veneer and plywood manufacture. Large sawn volumes have been exported to New Zealand and some to Australia for manufacture of furniture, joinery, mouldings and turnery.

● The timbers range in colour from a pale pinkish-brown to pale redbrown to pale red. Quarter-sawn boards produce a distinct striped or ribbon effect, whilst back sawn material is nicely figured with a fine tracery pattern. Calophyllum is a suitable substitute for Lauan, Seraya & Meranti.

● The timbers can be dried satisfactorily. Quarter-sawn material dries well with little degrade. Back-sawn material has a tendency to cup and twist especially in wide boards. Drying stickers should be spaced at 450mm intervals along each row of boards and stacks heavily weighted to alleviate warp.

● Calophyllum is a useful, general purpose timber. Due to its wide range, in density, its mechanical properties can be variable. It is suitable for a wide range of end uses including; furniture and cabinet work, interior joinery, mouldings, architraves, door jambs, general building construction, flooring and exterior cladding, including weatherboards. It is often compared to light red meranti (Malaysia) or red lauan (Philippines). It can substitute for this group of species.

P RO P E R T I E S

Density 475-650 kg/m3 @ 12% m.c Colour Pale pinkish-brown to pale red. Texture Moderately coarse and slightly uneven. Grain Interlocked. Figure Ribbon or striped effect on quarter-sawn faces. Durability Moderately durable. Permeability Heartwood resistant to pressure impregnation. Lyctid susceptibility Some species susceptible.

WO R K A B I L I T Y

General Reasonably good working and finishing properties. Sawing Readily sawn; some boards a little fibrous in nature. Planing Generally planes well dependent on grain and cutting angle. A reduction of cutter angle (20°) will assist. Blunting Low. Boring Good characteristics; may be a little fibrous. Turning Generally good; may be a little fibrous. Nailing Pre-drilling on board ends advisable to prevent splitting. Gluing Glues very well with all adhesives. Finishing With care, smooth finish obtainable. Polishes very well.

M E C H A N I C A L P R O P E R T I E S

Strength SD5 Structural Grade F17 (select grade). Toughness (Izod) 12J (seasoned), 10J (unseasoned). Hardness (Janka) 4.6kN (seasoned), 3.6kN (unseasoned). Max. Crushing Strength 58MPa (seasoned), 34MPa (unseasoned). Modulus of Elasticity 14GPa (seasoned), 11GPa (unseasoned). Modulus of Rupture 102MPa (seasoned), 59MPa (unseasoned).

S E A S O N I N G

General Seasons readily and well providing proper drying practices are adhered to re. stickering and weighting of stacks. Movement Medium. Shrinkage Medium.