we use currently the 1:1 mix for vulcanizing silicone rubber molds. This works fine for thicker models, but for filigree type items the model deforms because of the heat (170 celcius) and pressure. Does anyone have experience in molding thin models with black resin? Does the black resin have a better dimensional stability under heat?
We also use RTV rubber (Castaldo LiquaCast/ LiquaFast) but I miss the flexibility of silicone rubber.
Thanks for any comment!