Born in London, England in 1919 of Anglo Danish parentage, he is the third generation of a family of artists and craftsmen in metal.  His grandfather worked on beaten copper sculpture in Denmark and in Germany.  It was an uncle in the United States who produced some startling sculptural forms by beating aluminium, which attracted considerable attention in artistic circles and in the press.  Indeed it was his uncle’s success that prompted Rasmussen to study the whole problem of shaping sculpture from metal.  Eventually he saw the solution to certain inherent problems lay in the adoption of welding techniques.  He discovered that such difficulties as the making of ears, hair and other figurative parts, encountered in stone or marble portraiture, were eliminated in metal sculpture by beating and welding the metal medium.