Jarrah (Eucalyptus marginata) – CNC Router carving test
Jarrah wood carved smooth and retains detail during the CNC router test. Test was run on single relief with a 1/4′ router bits. The rotation speed versus feed rate is not critical. The wood produced a clear surface with good developed shavings. No post processing was done on this relief. Throughout the carving process the relief remain clear of any burs. The relief surface have darker rings that are not consistent, this does make an impact on the visual quality of the relief. Wood and relief choice will be critical to use the nature of the wood.
More carvings using various wood are available in our carving library
Family – Myrtaceae Eucalyptus
Distribution: West and S-W Australia
Characteristics: Jarrah is renowned for its rich red colours that deepen over time. The heartwood ranges from deep browns to burgundy hues. Jarrah sapwood exhibits shades from pale yellow to pink-orange. The timber displays a moderately coarse and even textured grain. The occasional incidence of wavy and interlocking grain produces some samples with a sought after fiddle-back figure.
Working Qualities: Difficult to dry, and to work with hand tools. Very hard and heavy. Glues and polishes well. highly durable.
Uses: Used a lot in the past for railway sleepers, mostly used now for flooring, furniture, countertops and decking.
Technical Data: (Visit the Wood DataBase for explanation and details)
Tree Size: 100-130 ft (30-40 m) tall, 3-5 ft (1-1.5 m) trunk diameter
Average Dried Weight: 52 lbs/ft3 (835 kg/m3)
Specific Gravity (Basic, 12% MC): .66, .84
Janka Hardness: 1,860 lbf (8,270 N)
Modulus of Rupture: 15,650 lbf/in2 (108.0 MPa)
Elastic Modulus: 2,132,000 lbf/in2 (14.70 GPa)
Crushing Strength: 9,600 lbf/in2 (66.2 MPa)
Shrinkage: Radial: 6.3%, Tangential: 9.4%, Volumetric: 16.4%, T/R Ratio: 1.5
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