Interesting, I just ran across this by chance, a guy by the name of @Terry_A_Davis created a frosting extruder 3D printer / CNC machine back in 2003. He was certainly way ahead of his time. The RepRap Darwin was released in 2007.
http://wayback.archive.org/web/20030401164138/http://www.simstructure.hare.com/CottonTail/cttntail.htm