He spent time at the
Cornish (New Hampshire) Art Colony, becoming an assistant to Saint Gaudens. While there he perfected the
pointing machine used by Gaudens, called a "cubical pantograph," that increased the "accuracy and speed" of the previous machines, allowing for up to 400 points a day. The machine, while relatively new, was used to increase to monumental proportions the 500 clay models accepted in 1900 by Karl Bitter, director of sculpture, for the 1901
Pan-American Exposition in Buffalo, New York. Thirty-five sculptors, including Saint Gaudens, and 50–75 assistants worked for 5 months tirelessly in Weehawken, New Jersey, to produce the 500 plaster-and-fiber statues to be displayed in the temporary Rainbow City of Light, celebrating the genius of man at the dawn of the 20th century. Paine's marvelous invention was also used on Sherman's horse on the Sherman Monument in New York (1903). ==Panama-Pacific International Exposition==