The mold has a sleeve (2) for forming an edge area of a tibia component. A punch is arranged in the sleeve in displaceable manner and provided for forming a femur side surface of the tibial component. A cover (4) is provided for designing a tibia-side surface of the tibia component. Fixing units (5) are provided at the sleeve and at the punch for fixing the punch with different positions in the sleeve. The mold is made of dimensionally stable material, such as plastic, polypropylene, polyethylene and polyamide. The plastic is glass reinforced polypropylene.
