You can efficiently process mould surfaces with polishing stones. The great diversity of stones makes it difficult to choose the type that perfectly suits your application. Gesswein Abrasive Stones are designed to be used directly after machining, or spark eroding, in the preparation of surfaces for final polishing. All stones are manufactured to high standards from a liquid mix of the abrasive and the bonding agent, which is then fired in a thermostatically controlled kiln to ensure uniform distribution of the abrasive particles in each stone.