In 1988, he left Argentina for Spain, where he built models for an aviation art gallery in London and produced replicas for collectors in the United States and Europe. While working for the London gallery, Rojas Bazan was able to choose which models he built, and made several of what he describes as non-commercial models, that all sold despite not being ordered. In 1994, he moved to the U.S. and was hired by Fine Art Models, a company located in Royal Oak, Michigan. During his years working for Fine Art Models, he made models in 1/15 scale that were copied in Eastern Europe and sold in limited editions. In recent years, he has worked as a freelance artist for collectors and museums.