Puun matka metsästä hirreksi - Sahaus

When sawing side-cut logs, more and more log builders have started using a band saw, which also makes it possible to saw large pine logs. In this video, we explain how log craftsmen take advantage of band-sawing benefits when producing construction-grade logs from trees they have felled and debarked themselves. 0:00 Beginning 0:36 Bandsaw introduction 1:51 Installing the blade 3:00 Adjusting blade tension 4:21 Sawmill unit hydraulics 4:54 Adjusting the sawing unit 6:55 Finding a correct position to the log 7:42 Measuring log thickness 8:00 Adjusting blade cutting height based on log thickness 8:56 Turning a log on the carriage 10:14 Inspecting fresly cut logs When the entire timber procurement chain is managed by the same people — from selecting the trees to sawing and finally construction — the best possible building quality can be ensured. Video content and work stages: • Log handling: Depending on the size of the tree, we saw logs of different thicknesses. The largest logs can produce side-cut logs suitable even for detached houses, where the wall thickness meets energy-efficiency requirements. • Debarking and sawing order: The largest logs, which do not fit into the debarking machine, are sawn first and debarked afterward. Smaller logs are debarked before sawing. • Preparing the band saw: We demonstrate how the band saw is prepared for operation and how the log is measured and correctly positioned on the saw table before starting the saw. • Sawing blanks: We use a method where the fresh timber is first sawn into oversized blanks. In the video, you can see how we saw 220 mm thick log beams in practice (including a 20 mm extra wood). Quality and sustainability: The band saw used by Hirsityö Heikkilä Oy operates largely on electricity generated by solar panels. The logs sawn during spring are dried for at least two years in a covered outdoor storage stack. After the wood has dried and naturally twisted, the blanks are straightened and re-sawn to their final dimensions (in the video example, first 220 mm and finally 200 mm thick). This results in even higher-quality, dimensionally accurate logs for construction.