3D Laser Machining to Replace EDM in Manufacturing

3D laser machining of thread features for locking mechanisms in plastic bottle molds is a prime example of technological advancement and process improvement within conventional mold manufacturing. Traditionally, mold manufacturers relied on EDM (Electrical Discharge Machining) to create the thread feature in the neck of a bottle mold. That process required producing numerous graphite electrodes—typically 2–3 electrodes per cavity—and, in this case, 48 cavities total. Each electrode then had to be sunk into the mold using the EDM machine, adding time, cost, and complexity.

By adopting the latest 3D machining and engraving technology from reACTIV Laser Systems, this customer eliminated the need for consumable electrodes, electrode manufacturing, and the electrode sinking process entirely. The result was a streamlined manufacturing method where the thread feature in the neck was produced at 4–6 times lower cost than conventional EDM.