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FineCore Precision
Polished steel core insert that forms the inside of a plastic housing, with rib slots and ejector bores

Injection moulds

Core insert

Process
Milling, hardening, wire and sinker EDM, polishing
Typical materials
Mould steels such as 1.2343 and 1.2738
Typical use
Forming the inside of the moulded part: bosses, ribs and walls