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.Mechanical Engineerin
