GB craft silicone molds for candles, irresisteble to try out with cement. There were a LOT of trial and errors, and then I solved it. The Solution is to soak the molds in medium warm water with soap, it is important to include soap, it enables the quickcrete to get into those small details. Mix the quickcrete while soaking the molds, pick up the mold, shake it of, but do not dry it, pour the cement in soaked mold. Voila' : ) I will eventually show them one by one.