Exploring living hinges

I've began to explore living hinge design mainly to find a way to make a circular trampoline sort of effect, for maybe a push button or other such function. Several circular designs I've tried have proven rigid even though I've taken away much of the support. This has shown me quite clearly what the problem is. I ended up downloading a set of living hinge designs and just simply bending one of them to an arch so that I got roughly a quarter of a circle. It worked great! This is what I'll be using for further development of the full circle. As soon as I find time for it.