Great questions! This is how I have seen this material work. It comes in small pellet form. When you heat water to exactly 150 degrees just below boiling, you drop the pellets into the water & they turn clear. After they all turn clear you smash them together into a clump. It reminds me of the cloudy colored hot glue sticks that turn clear when heated up in a glue gun. It has the consistency of hot glue when it melts, but will not burn you, at they pliable temperature, & harden to what hot glue is like after it cools. It is like hot glue & can be reheated. It adheres excellent to existing plastic just like hot glue does. Sculpting characteristics are very good as long as you can keep reheating it to be pliable.