Plane grinding ensures that the surfaces of all specimens are similar, despite their initial condition and their previous treatment. Diamond is used as the abrasive with MD-Piano, which guarantees a high removal rate and short grinding times. As for MD-Piano, a consistantly high material removal is obtained in a short time. The discs provide a cutting action equally efficient on both hard and soft materials or phases. Thus, absolutely plane specimens without any relief between different phases are obtained.
Edge rounding at the interface between resin and sample is eliminated.
Fine grinding produces a surface with such a small amount of deformation that it can be removed during polishing. Because of the drawbacks with grinding papers, and to improve and facilitate fine grinding, Struers developed alternative fine grinding surfaces. Diamond suspension or spray is applied in regular intervals during preparation. Consequently, a constant material removal rate is obtained. MD-Allegro is used for materials with a hardness greater than HV 150.