specifically: a machine that shapes material by forcing it through a specially designed opening
a pasta extruder
There are recipes too, and for those who don't have a sausage extruder at home (who doesn't?) some of the sausages don't require casings. Karon Liu
[Zak] Wilson brought a 3-D printer, and … he concedes that watching the extruder swing back and forth, depositing tiny bits of material with each pass, is "maybe not a terrible analogy for our stay here." Tom Kizzia