During the Waterford Crystal tour, you will be mesmerized while watching the various stages of the process – blowing, polishing, marking, cutting, etc. Each master specializes in only one stage. The craftsman who had the greatest influence on Waterford Crystal was Jonathan Gatchell. While a clerk in 1783, John Hill taught him how to mix, polish and cut glass. Gatchell worked at the plant for forty years. He became a co-owner in 1799 and then sole proprietor from 1810 until 1823.