Hand-blown glass actually begins with the mouth, and is also referred to as mouth blown. The glass blower places molten glass (heated to over 2,000 degrees Farenheit) at the end of a blowpipe and forcefully blows air into the glass while carefully rotating the pipe. The artisan continually turns the vessel to fine tune the form, often with the assistance of another. The glass is continuously reheated while additional refinements are made to the shape. Many times these shapes are then placed in a steel or wood formed mold to help shape the glass.