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FineCore Precision
Graphite sinker-EDM electrode on its reference block, burn form up, with thin ribs and two core pins

CNC machining

Graphite EDM electrode

Process
High-speed milling of fine-grain graphite with ball-nose cutters, sharp burn edges
Typical materials
Fine-grain graphite
Typical use
Sinking ribs and deep slots into hardened mould cavities by EDM