EZ-Grind Lubricant for Glass Grinding A lubricant for use in the water reservoir of glass grinding machines. It helps extend the life of diamond grinding bits and reduce grinding time by eliminating friction and suction resistance. For general glass grinding, use 1 tablespoon mixed with 2 cups of water. For higher-demand applications, use EZ-Grind™ mixed with water in a 1:1 ratio. No claims, no returns accepted.