You can make custom sausages with this
The Wurster is a simple funnel for stuffing sausages with your meat grinder. Outer diameter is 70mm.
The Wu...rster MK2 has an additional inner funnel for simultaneous extrusion of a second component (mustard, cheese, spices... you decide) in the middle of the sausage. :-)
I printed these from PLA without any support on a Solidoodle2 with .2mm layer (.5mm wall and 100%infill) and they are even airtight, but the surface quality is rather poor, so i suggest trying 1mm wall and .1mm layers