![]() Have your would-be costume wearer crouch down and make their body into a ball as small as they can. Make a rough measurement of the diameter of their crouched body - will it fit into the width you calculated from the aspect ratio. If so, congratulations, you have the costume size. If not, you will have to make the Roly Poly a bit wider until it's width is the diameter of smallest ball the person can crouch into. Since you want to end up with a costume that can form a ball, each shell piece needs to be molded on a ball. We found a large exercise ball and inflated it to until its diameter was the width we calculated in Step 1. We first coated the ball with a thin layer of petroleum jelly so the paper mache would not stick to it. ![]() Each of the seven shell pieces were formed on the ball, dried, removed and trimmed. I recommend you use white glue rather than paste to make the paper mache as we did - it takes longer to dry, but produces a stronger shell. We used white construction paper from our local craft store and put 3 layers of paper on the ball for each shell. (Yes, this stage is a bit tedious.er.I mean time consuming.
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