Kirschen firmer chisel

Our chisels (also known as mortise chisels) are handcrafted from a special tool steel. The forging process further enhances the material structure of the cherry wood chisels. The heat treatment in a salt bath achieves a hardness of ± HRc 61 across the entire usable length of the blade, significantly exceeding the requirements of the German DIN standard. A self-developed polishing technique creates a smooth surface free of grooves, allowing for a clean cut and easier penetration into the wood.

Our chisels are manufactured with a cutting angle of 25° as standard. This angle is excellent for soft to medium-hard woods. However, before the chisels are used for the first time, they should be honed with a sharpening stone to ensure the edge is razor-sharp for initial use. To work successfully with the chisel for many years, we recommend cleaning the tool after each use with a lightly oiled cloth. The oil film applied in this way protects the chisel from moisture and thus from rust.