ABSTRACT

In small circular sawmills the log is handled and sawed different way than in large scale sawing mills. The sawing parameters and positions are selected individually to each log which affects to the quality and the value of the sawed product. Position of the log will affect to the sawed product dimensions and several quality factors such as strength properties. Therefore, the optimal log positioning will increase the value (better timber grades) and decrease the material losses for sawn timber. The rotation and positioning of the log is mainly based on the evaluation of the sawyer which may affect the result. In this case the traditional laser triangulation methods do not work as wanted without the lengthwise movement. Only possible measurement place and time is during the log rotation on the sawing table.