What SPI mould classes 101, 102, 103, 104 and 105 mean for cycle life, steel and construction, and how to choose the right class for your injection mould (mold).
Hot runners save material and cycle time; cold runners cost less to build and suit low volumes and colour changes. A practical comparison for injection mould (mold) buyers.
Which steel for your injection mould (mold)? Typical hardness, strengths and best uses of P20, 718, H13, S136 and NAK80, and how volume, resin and finish decide.
Part size, complexity, cavities, steel, runner system, finish and tolerances – the factors that decide what an injection mould (mold) costs, and how to lower the total cost.