Thermal Effects on Accuracy in the 3DKeltool™ Process
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The 3DKeltool™ process has been used to produce injection moulding inserts capable ofproducing millions ofparts with quick cycle times (1). Short lead times are possible however accuracy is reduced for dimensions over 150mm. The use ofroom temperature vulcanising (RTV) silicone rubber in the 3DKeltool™ process is a possible reason for the loss of accuracy in larger parts. Effects of temperature changes during the process are assessed both theoretically and experimentally. The results show close agreement between theoretical predictions and experimental results for dimensional changes. Suggestions which could allow accurate manufacture oflarger 3DKletool™ parts are presented.