GREEN-SAW: Tools for Resource and Energy Efficient Next-Gen Sawmills

Background

Problem and potential: Sawing of logs generates 10–15% sawdust, which is usually burned, resulting in loss of economic value and stored CO₂. A reduction of kerf width by 1 mm could reduce Sweden’s CO₂ emissions by up to 0.4%.

Research solution: The project develops models for cutting processes and tool–wood interaction supported by CT technology, high‑speed imaging, and numerical simulation to optimize sawing and enable thinner tools.

Impact and funding: The aim is to increase yield, reduce energy consumption, and strengthen climate benefits throughout the value chain. The project funds Frank Schleicher’s doctoral education at LTU, with supervision from LTU and funding through the Swedish Energy Agency.

Impact Goals

The project increases resource efficiency and climate benefits in the Swedish sawmill industry through real‑time controlled sawing using CT data and cutting‑force measurement. This enables narrower kerfs (−1 mm), generates +2.5 billion SEK/year in value, reduces CO₂ emissions by 225,000 tons, and lays the foundation for future high‑precision sawing.

Project Goals

The project develops knowledge, methods, and equipment for more precise and resource‑efficient sawing through real‑time control based on CT data and cutting forces. The aim is to create prototype equipment, new tools for thinner cuts, and demonstrate a reduction in kerf width of at least 0.2 mm—strengthening industrial precision, quality, and sustainability.

Target Groups

• Swedish sawmills and the wood industry can implement the technology to increase yield and reduce energy use.
• Tool and machinery manufacturers can develop saw tools and equipment for thinner cuts and intelligent control.

• Research and innovation actors working with process modeling, measurement technology, and sustainable production.

   

This work is carried out with financial support from the Impact Innovation program Net Zero Industry—an initiative of the Swedish Energy Agency, Formas, and Vinnova.