Dome
Removing the dome from the mold

Removing the dome from the mold turned out to be a major problem: it was completely stuck. Understandably so, because there is no air between concrete and polyester. I drilled a small hole in the bottom and attached a quick coupling for a water hose. I expected the dome to float up, but it didn’t. In the end, I had to break the mold apart. In the photo you can see the white release agent and pieces of concrete.