Board Quality of Manglid Manglieta glauca Bl Extracted with Two Sawing Patterns
Journal: Jurnal Penelitian Hasil Hutan (Vol.30, No. 1)Publication Date: 2012-03-30
Authors : Mohamad Siarudin; Ary Widiyanto;
Page : 10-16
Keywords : ;
Abstract
This research aims to examine the quality of manglid (Manglieta glauca Bi sawn boards through two sawing patterns, based on the defective shape andfiber separation.S amp/es of mang/id logs uere takenfrom communityforest in S odonghi/ir village,Tasikma/aya &genry, WestJava. A total of 3 5 sawn boardsfrom each of live sawingpattern and semi-quarter sawingpattern were taken as specimens. The research results show that type of shape defects occurred were twisting defect (55,91 %), curving defect(53,57 %) and arcing defect (41,35 %). In terms of the.fiber separation defects, a// of defect types occurred including dosed rupture (18,25 %), opened rupture (14, 13 %) and splitted (2,82 %). The arcing and twisting defects are signijicant/y different between the two saning patterns. The curving defect, dosed rupture, opened rupture,and splitting are re/ative!J similar between the two sawingpatterns. SarJJtl boardsfrom live saivingpattern have a lower arcing defect and percentage of fresh sapwood, but have a higher curving defect than thosefrom semi quarter sawingpattern. Based on those defective shape andfiber separation defects, sawn board extractedfrom live sawingpatterns
shows better quality than those of semi quarter refering to the Indonesian National Standard.
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