Acta Scientiarum Polonorum
Silvarum Colendarum Ratio et Industria Lignaria

Background. In order to conduct the investigations pine wood (Pinus sylvestris L.) was used in the form of large-sized roundwood of grade WC0. This raw material is a basic material processed in the domestic sawmill production.
Material and methods. The aim of presented research was to evaluate the effect of roundwood dimensions on material recovery efficiency indicators. The model large-sized roundwood was processed into logs. Next, logs were sawn in order to provide edged timber with the target application as prefabricated materials.
Results. The results are presented starting with log manipulation and ending with timber sawing and manufacturing of final products. Conslusions. On the basis of presented results it was found that both raw material selection and the applied technology were important factors affecting material recovery efficiency indicators in the large-sized roundwood sawing process. The study shows an increase in values of performance indices for the processing of logs with smaller diameters. This indicator results from prefabrication assumptions.