At the age of 17, Iommi lost the tips of the middle and ring fingers of his right hand in an industrial accident on his last day of work in a sheet metal factory. Iommi described how he "was told 'you'll never play again. It was just unbelievable. I sat in the hospital with my hand in this bag and I thought 'that's it – I'm finished. But eventually I thought 'I'm not going to accept that. There must be a way I can play'." After the injury Iommi considered abandoning the guitar entirely. However, his factory foreman played him a recording of famous jazz guitarist
Django Reinhardt, which encouraged him to continue as a musician. As Iommi would later write:
My friend said, "Listen to this guy play", and I went, "No way! Listening to someone play the guitar is the very last thing I want to do right now!" But he kept insisting and he ended up playing the record for me. I told him I thought it was really good and then he said, "You know, the guy's only playing with two fingers on his fretboard hand because of an injury he sustained in a terrible fire." I was totally knocked back by this revelation and was so impressed by what I had just heard that I suddenly became inspired to start trying to play again