Remote Clay 3D Printing Demonstration

This is one of five videos recorded from online teaching. It is a slightly chaotic studio demonstration of the practicalities of clay extrusion 3D printing. I apologise in advance for the editing.
Contents
Modelling a demo cup - start
Slicing 3D model for printing - start 2 minutes
Clay preparation and filling container - start 8 minutes
Printer setup and base preparation - start 17 minutes
First print - start 29 minutes
Second print - start 44 minutes
Hint - my delivery style is slow and so with the RUclips Settings cog button, I would not be offended if you increase the Playback Speed.
For more information on free downloadable ' A Guide to Clay 3D Printing' see - www.keep-art.co...
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[@bobbeaver5208]

Hi Jonathan - Do you know of anyone experimenting with directly mixing powder and water within the extrusion chamber to create the extrusion paste? Thanks Bob.B (Aussie Potter)

[@jkpottery]

Hi Bob, I don't know of anybody mixing dry clay and water in the extruder chamber.
Early days with WASP and watching them doing their architectural scale printing, for eases of material delivery I did wonder about the extruder head mixing dry clay ingredients and water. The dry clay powder would be easier to pipe to the printhead rather than a paste mix that needs a lot of force to be moved down a pipe. The drawback of mixing in the printhead is that freshly mixed clay is very short, it is not very plastic and the extrusion crack up very easily. On an architectural scale this might not be too bad but if you are working at a pottery scale you want a good well matured plastic clay for a good extrusion.
I don't know if you have seen my video 'Clay Extrusion 3D Printing - The Process' ( ruclips.net/video/M2grAyX8sdE/видео.html ) but about 33 minutes into that I talk about the shortcomings of freshly mixed clay. That said I would not want to put anybody off trying new things. For all I know in-printhead mixing might be just the breakthrough we need.
On the subject of in-printhead mixing the French company 3D Minerals ( www.3d-minerals.com/lang_en/ ) are doing something interesting, although I have not got to the bottom of it exactly. I think they are deflocculating the clay to make it more runny to pump to the printhead and then deflocculating it, making it stiff again in the printhead for the extrusion.