Gary Tunnicliffe demonstrates the reverse waxing process using a blowtorch. A close-up of wax melting on the Creature's hand.

In the film, there is a scene where The Creature has to "regrow" from just bones to flesh and blood as it wakes from its sleep. To achieve this effect, Tunnicliffe uses a process called "reverse waxing." First, molds were made of The Creature's skeleton (which appears on the wall of its burial chamber in the film). Then, these molds were carefully covered with waxes of different colors and different melting points. On the set, large hot air guns melted the wax while the camera was rolling. The waxes were strategically placed so that when they melted, the relative speeds and patterns of the waxes simulated bones, tendons, muscles, and skin. In effect, Tunnicliffe and his team built a large model of the tissue layers covering bones, including fiber patterns, crisscrossing tendons, and other details. After the melting scenes were shot, the film was run backwards. This makes it appear as if dried bits of skin and bone are liquefying, expanding, and combining to cover the bones with muscle and skin.  The "regrowth" achieved through this process makes the Creature truly come alive.