The art of making glass has been with mankind for centuries. In ancient times, a mix of ingredients was placed into a furnace to melt. The artist would then gather the glass on the end of a hollow pole. Blowing into the pole created an empty space in the molten glass. The outside was then pulled or molded into shape and the center was blown until the desired product was achieved. Modern glass blowing is remarkably similar to this process. Machines can be used to blow air into the glass, but many artists say it does not give them the same control as blowing into the pole. For this reason, they prefer to make glass in the same manner as their ancestral craftsmen.