Microfor HP4 The HP4 basis, designed for high volume production, is available with the EDM technology or high speed drilling spindles, depending on your request. Main topics: For high volume production Command based on industrial PC Specific technology of micro EDM with 4 independent SARIX generators Rotation of the electrode while machining to optimise hole geometry, quality and drilling speed Control device to automatically adjust the process parameters Machining with tungsten-carbide, brass or copper electrodes Central cooling with tube electrodes