Nutso, thank you for your answer I will tell my colleague to leave it cure for longer time, I'm sure this tackyness will go!
I just realized, we have the same issue with Rebound 25 brush-on silicone as well! We tried a new way of makeing a mold. We brushed the silicon on the masterpiece, on several layers, untill it got at least 10mm thick everywhere. Than when it cured, we made a frame and poured it out with Acrylic One which is a kind of gypsum with 0% shrinkage, great for mold supporting cover. It is much cheaper way, of makeing molds, but this Rebound expanded very much, when we put the mold back to the gypsum support, it was wiggly or creased as it didn't fit back properly. You could realized the differenc by sight from the first and the last cast! the product was way much bigger, and some lines an sides were wavy. But, it came up quite early maybe at the 10th-15th cast. We were told, the rebound is really sensitive for humidity and the weather was rather rainy those days, but didn't have time for expriments with it, so we came back to mold max, but now we have more or less the same issue...
![Sad :(](./images/smilies/icon_e_sad.gif)
It seems you are an exprt of silicones and resins, what is your oppinion of Smooth-On? Do you think we should try something else, new silicon and resin?