I had a nice chat with @T3P3Tony at the East Coast RepRap Festival this past weekend, but unfortunately a laptop issue prevented me from demonstrating the printer. I thought I'd share a few links about this experimental effort, for Tony and anyone else who might be curious about clay extrusion.
I've been very focused on trying to see if clay can match FDM polymer printing in terms of resolution and form complexity. After a few years of work nothing has convinced me this is untrue, though there are some areas where things have gotten difficult.
So here are some links relating to high resolution (in the context of extrusion) clay printing:
The print nozzles I'm using are cake frosting tips, which have been great to work with - cheap, stainless steel, easy to replace. The best cake frosting tips I can find have come from the UK, like the Duet itself.
I'm an artist/teacher using this for art purposes, but also interested lately in architectural possibilities. Some finished objects can be seen here.
This is an open source project but also very much a work-in-progress. Thanks for checking it out if you made it this far!