Carlos Castillo's artistic devotion dates back to his earliest years of childhood, when between scribbles in the dirt and drawings auctioned off in classroom, he discovered his passion for aesthetics and meaning. Years later, freshly out of adolescence, the young artist decided to dedicate himself entirely to his work. The spirit of his canvases took the form of a vibrant, personal criollismo that led him to the main exhibition halls of Quindío, and later to Europe, where he explored the roots of Hispanic American art. In 1995, guided by his curiosity in indigenous plastic art and the vast possibilities of sculpture, he became obsessed with the search for a technique of his own. A long process of trial and error that, twelve years later, culminated in the invention of PDR — his first ecological amalgam with the qualities he had long sought: plasticity, hardness, and resistance. Since his return to Colombia in 2011, the artist has continued exhibiting and experimenting with the creation of sculptural techniques that are increasingly lightweight and environmentally conscious. With his most recent iteration, called KAREM, he sculpts ever more clues to the question that launched him as an inventor: What would have become of indigenous plastic art had the conquest never occurred?