Аннотация:The purpose of the present study was the influence of deposition parameters of diamond- like-carbon coatings (DLC), with the modified cathodic vacuum arc (MCVA) method deposited on tool substrates (high-speed steel HS6-5-2) for woodworking, on their structure and tribological properties. DLC coating was deposited by MCVA method. Structure, adhesion, hardness, internal stresses and friction wear resistance of DLC coatings were tested. Tests of knives coated with DLC and uncoated ones was made by machining medium density fibreboard (MDF) using a industrial milling machine.