A third tweak took me into Billy Idol territory when I asked for spiky blonde hair. My action ... I wanted to create a 3D-printed version. Turning an image into a 3D model can be complicated ...

Following is a transcript of the video. Narrator: If you peel back the layers of Rapunzel's hair in "Tangled," you'll see just how complicated animating 3D hair can be. But back then, Disney had ...