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THE DIFFERENCE OF MACHINING PROPERTIES OF TIMO (Timonius sericeus (Desf) K. Schum.) And KABESAK WOOD (Acacia leucophloea (Roxb.) Willd.) FROM EAST NUSA TENGGARA

Heny Rianawati, Siswadi Siswadi, Retno Setyowati

Sari

Machining properties is one of the parameters to determine the quality of the wood. Tests on machining properties of wood are important to know the easiness level of workmanship as raw materials of furniture industry, construction wood and other wood products. This research was aimed at determining the difference of machining properties between timo wood (Timonius sericeus (Desf) K. Schum.) and kabesak wood (Acacia leucophloea (Roxb.) Willd.) from the village of Reknamo, Kupang district, East Nusa Tenggara. Testing procedures were based on ASTM D1666 including: planning, shaping, sanding, drilling and turning. The observation of qualities of the machining were done visually by calculating the percentage of defects that arise on the surface of the samples after the machining process, then the qualities were classified into five quality classes. The results showed that the machining properties of timo wood and kabesak wood were very good and belonging to the quality of class I. The significant difference between the machining properties of both the timbers is in the sanding properties, where the average free defect of sanding timo wood is 85% while kabesak wood is 84.5%. Both timo and kabesak wood are suitable as raw material, for the variety of furniture and molding products.

Kata Kunci

Machining properties; timo wood; kabesak wood; East Nusa Tenggara

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Referensi

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