The most cost-effective metallographic polisher or metallographic grinder would be the GenGrind N Series – Single and dual wheel manual metallographic polisher and grinder. This series offers superior quality / low cost metallographic polisher and grinder to meet your low to medium sample preparation requirements. All units comes with variable wheel size and speed options. Additional upgrades, like our famous NG-Magneto upgrade, which allows your metallographic polisher and grinders to be used with magnetic consumables. Request quote today to learn more.