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Why are injection moulds so expensive to make?

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The design and structure of mold in injection molding machines are so complicated that makes them, sometimes, more expensive than the machine without mold. It depends on the polymer materials used for injection, size and design of the mold.

Why are injection moulds so expensive to make?
1.injection moulds are usually made of steel or Alu. Steel or Alu. are expensive.
2.The mold designer and engineers should be experienced and well trained. Their salary is not low.
3.As they are made of steel or Alu., they are hard, so the mould making equipments are specially made to cut, like CNC, EDM, grinding machine, milling machine, Line cutting machine, etc. The machines are very expensive, and the machines can not make all kinds of sizes of moulds.
4.Mold testing requires suitable injection molding machine, and the machine is also expensive.
5.As they are hard, the processing time is relatively long, average lead time is 30–40 days for middle size molds, some even as long as 80 days.

Making a successful injection Moulding tool is a hugely complex undertaking requiring lots of expertise in a myriad of considerations and parameters.Ehe end it's down to supply and demand, making a tool is sufficiently difficult that there is a bottleneck in supply that allows the toolmaker to charge more. This varies according to the complexity of the tool.
 

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