Adding the curing agent for fastening the curing time & operation time according to the local temperature.On the one hand ,don’t add curing agent more than 8%(otherwise,the finished molds will meet a high shrinkage),On the other hand, don’t add curing agent less than 0.8%(silicone and curing agent can not be mixed evenly,the silicone rubber will be partly solidified and this will give birth to difficulties in your final operation.what is more,the finished moulds will meet a short life .)
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