All the resources involved in micromilling operations (machine tool, tool, fixture, workpiece) have to be accurately managed to improve the final workpiece quality. Special attention has to be paid also to system thermal stability, micromilling process parameters and machining strategies, workpiece and tool measurement accuracy. The present paper proposes an easy and industry-oriented procedure to maximize the achievable workpiece accuracy working in absolute coordinates. Accurate plane surfaces with a strict flatness deviation are machined on a CuNi12Zn30Pb1 benchmark workpiece to demonstrate the procedure effectiveness.