peterje

Is there a type of plastic that has a low melting point or better a low soft temperature?
What we need is to blow up a ball (3-7 cm in diameter), cover the ball except a 6mm hole, let it dry, and then removes the plastic ball through the 6mm hole.
So to remove the plastic it needs to be soft and still in one piece be able to get it out of the 6mm hole.