How to make a long life running crate mould? 1，Choose the correct steel for mould base and mould main steel. to use a pre-hardened steel with HRC bigger then 33 for mould base and choose the correct steel or material for the durable mould components.make the correct harden treatment to each steel piece and make the steel hardness controlled, you can not make it too hard.And then before shipping, can make nitriding for the sliders. Then this mould can have a mould life from 1Million shots or running for 3years continuously. 2，To make the best optimal cooling effect, for durable plastic crate mould We should connect the water channel input and output as many circuit as possible. That is mean to make the crate mould with more separate cooling connections. With the feature of moldmax material, the mould can fastest reach cooling result, due to the fast heat transfer. www.jmtmould.com