When milling wood, the process causes contamination of the cutting edges and cavities after some time. The solid deposits are mainly resin residues. The contamination deteriorates the cutting quality and leads to increased friction, which in turn leads to higher temperatures and increased wear. Due to the complex design, planing heads can only be insufficiently cleaned with a brush.
One effective solution is to clean cutting tools such as milling heads, saw blades and planing heads with ultrasound.