Solid Wood-Bending of Red Pine Lumber by Boiling Treatment

자비처리(煮沸處理)에 의한 소나무 곡목제조(曲木製造)

This study was carried out to investigate the solid wood bending properties of red pine(Pinus densiflora S. et Z.)naturally grown in Korea by boiling treatment The specimens were green and their dimension was $15\times15\times350mm$. The optimum conditions for solid wood bending processing of pine lumber are shown in Table 6 and the minimum solid bending radius was 240 mm in boiling treatment. The effects of knot on the degradation of bending processing properties were very severe and the failures of diagonal and torn grained wood were 20% and 30% respectively.