 Once the ground floor structure was complete, the final assembly of the upper floor followed rapidly.For the glazing, Paxton used larger versions of machines he had originally devised for the Great Stove at Chatsworth, installing on-site production line systems, powered by steam engines, that dressed and finished the building parts.These included a machine that mechanically grooved the wooden window sash bars, and a painting machine that automatically dipped the parts in paint and then passed them through a series of rotating brushes to remove the excess.