Planer knives are a group of plate shaped tools with plane cutting edge and a specific constructive design.
These knives are special tools that have been designed for straightening, milling and planning wood operations, being mounted during their work on revolving shafts. The knives are chosen according to the dimensions of the rotating shafts and are manufactured only with a predesigned ß sharpening angle. The other (clearance and rake) angles are set during the mounting of the knives in the holders or in the revolving heads.
Planer knives are marketed in two qualities:
- made of 35 mm wide tool alloy steel, recommended for planning soft wood essences.
- made of 30 mm wide 18 % wolfram enriched high-speed tool steel, recommended for planning hardwood (oak, beech) essences.