Extruding a curved tube of pasta dough

[JT Smith]

TL;DR Summary

What features of an extruder die would result in a curved tube of pasta dough?

I have a pasta extruder that has a die for a straight tube form. It's simple: just a circular hole with a smaller solid circle suspended in the center. I was wondering what sort of die would produce a curved tube. Would offsetting the inner solid circle have that effect? Or is it more complicated than simply choosing a different die. Any ideas?

 

[Baluncore]

TL;DR Summary: What features of an extruder die would result in a curved tube of pasta dough?

Or is it more complicated than simply choosing a different die. Any ideas?

Yes, it is more complicated. The pasta needs constant thickness so it cooks evenly, so do not offset the centre.
The rate of extrusion is determined by the back pressure of the material extruded earlier. Guide the extruded material away in an arc, so one side grows faster than the other. You can achieve that by extending and curving the central part of the die. You will have to make a short or a long pasta helix, by cutting it regularly as it is extruded.