3D extruder for clay

I share with you my clay extruder that works with compressed air. I have been using it for more than a year now and it works really well, it allows to print a large volume quickly thanks to its layer height. The installation is for an Ender 5 but it can be installed on another model of printer.

You can find all my experiments on intagram: fpa.atelier

Parts needed for the realization :

Available on the internet:

-Nema 17 motor, 42 by 60mm, to be connected to the initial extruder connection.

https://amzn.eu/d/6RK0reD

-Nozzle of different size (I mainly use the 4mm one)

https://amzn.eu/d/ecEA1ZT

-Worm screw :POM Screw for LDM WASP Extruder XL

https://www.3dwasp.shop/en/prodotto/teflon-screw-for-ldm-wasp-extruder-xl/

-Clay reservoir

https://www.3dwasp.shop/en/prodotto/3l-clay-tank/

(Possible to do it in diy several tutorials exist:

https://youtu.be/A07G5dFNJtU )

Available in DIY stores:

-Copper union "Male to screw and female to solder

1/2'' - 14mm" (we will use only the main part, it is used to make the junction between the 3D printed part and the supply pipe, it is screwed on the extruder)

https://www.maxoutil.com/raccord-union-3-pieces-droit-a-joint-spheroconique-a-visser-male-a-souder-1126.html

• 25mm screws

https://www.amazon.fr/PLACO-perceuse-trompette-pi%C3%A8ces-E60261500/dp/B01CR1YYEC?th=1

• Seal 23mm inside, 3.6mm thick

https://www.promeca.com/13229-joint-torique-nbr70-o-23-x-36-mm-bague-r18-o-23-x-36-mm-bague-r18.html

-Flexible supply hose male / female 15 x 21 (I took one of 100cm for my case, it serves to connect the clay tank to the extruder with between the two the copper union. At the end of the session it is easy to clean it because it can be connected directly on the pipe of a shower, by removing the shower head, it removes all the material inside when you turn on the water. )

https://www.leroymerlin.fr/produits/plomberie/flexible-alimentation/flexible-alimentation-30-cm-male-femelle-15-x-21-polyethylene-20-ans-82661578.html

and obviously an air compressor.

About 260g for the piece.

I recommend to put at least 2.5mm for the walls and print without support.