How were the effects in Eraserhead done?

The effects in "Eraserhead," directed by David Lynch, were achieved using practical techniques rather than digital effects, which were not available at the time of its production in the 1970s. Lynch employed a variety of methods, including creative use of lighting, camera angles, and sound design to create unsettling atmospheres and surreal imagery. Additionally, props and makeup were used to produce the film's iconic grotesque visuals, such as the disturbing baby and industrial environments. The film's unique combination of these elements contributes to its nightmarish quality.