edm slotThis study was performed, which focused on the production of a precise slot measuring 5000 × 170 μm in a copper foil with a thickness of 125 μm.EDM Slot Sizing Block. This block contains nine EDM slots from 0.100 to 0.900 deep. Slot width is 0.011. Nominal depth is laser engraved on the side of the block. In accordance with PH Dwg.