View Full Version : sintra vs. wonderflex

08-21-2009, 05:59 PM
I need to make an almost perfect sphere, and I'm starting with a paper mache base. Which material (sintra or wonderflex) would be more easily formed into a relatively smooth sphere shape? I'm leaning more toward sintra, but I'm not sure.

08-21-2009, 09:02 PM

Sintra will ABSOLUTELY NOT form a sphere. It can only create simple curves. Bending it in more than one curve at the same time (like a ball) will create cardboard-like stress wrinkles.

Wonderflex is not much better because while it can form compound curves, it is not smooth. You would still have to cover it with something, a thick primer or clay or something.

You'd be better off covering the papier mache directly with air-drying clay instead of plastic. You will get it much smoother and then you can sand it when it dries so that it can be mirror-smooth.

08-22-2009, 07:57 PM
Yeah, if you want a perfect sphere, you'll need to go with something that cures. Paper mache or fiberglass. If those options are too messy, it might be quicker in the long run just to hunt down something pre-made that matches the dimensions you need.