Effect of tension wood on hard maple used for manufactured parts
U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1969 - House & Home - 8 pages
The report describes effects of tension wood, evidenced by longitudinal warping and shrinking and machining defects, for hard maple lumber. (Author).
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amount of lean average ground line bolt contain tension wood Defect free Defect Slight defect ve defecti degree of lean effects of tension equilibrium moisture content flitch Forest Products Laboratory Forest Service free defect fromthe upper side furniture hard maple i i i i i i I6 LEAN INDIVIDUAL VALUES l-inch-thick green lumber l/64 inch Number l7 trees lean and diameter LEAN IDEGREES leaning hardwood trees leaning trees long slender cuttings longitudinal shrinkage Lower side Samples machining defects nominal l-inch-thick Number Rings percentage of defect-free percentage of seriously presence of tension Radial Growth Rate of growth require high dimensional resawed rings per inch ripped approximately samples from upper samples fromthe Samples Mean Serious Iy seriously defective pieces SIDE DF TREE side of leaning thicker than nominal Total longitudinal warp total warp tree produced trees to degree twist U.S. Department upper and lower UPPER SIDE DF warped samples