'""Hatchet for the Honeymoon" had the least money allotted for special effects of any film directed by Bava, so nearly all of the visual effects were achieved in-camera, usually by rapidly adjusting the focus, or shooting through distorted lenses.Principal photography took place from September to October 1968 primarily in Barcelona, under the working title "Un'accetta per la luna di miele" (literally "A hatchet for the honeymoon").