The scene where Nancy is attacked by Krueger in her bathtub was accomplished with a special bottomless tub. The tub was put in a bathroom set that was built over a swimming pool. During the underwater sequence, Heather Langenkamp was replaced with a stuntwoman. The melting staircase in Nancy's dream was Robert Shaye's idea based on his own nightmares; it was created using pancake mix. The film's special effects artist Jim Doyle portrayed Freddy on the scene where his face and hands that stretch through the wall and reach out for Nancy when she dreams; the wall was built by Doyle out of spandex.