Originally shared by Anatoly Berezkin Due to high interest in extruders for clay i

3D Printing
,
1

Originally shared by Anatoly Berezkin

Due to high interest in extruders for clay i would like to post desigh of a full-metall extruder, made from standard components. Assembly requires minimal toolset. Design contains only one customized bracket that makes extruder compatible with any 3D printer. Please find more details, list of materials and schematics at https://www.stoneflower3d.com/projects/clay-extruder-prototype/

2

Wow! I’m super impressed with the results you’re getting with a wood screw jammed into a brass T fitting!

3

So it’s a volumetric syringe pump feeding the screw pump? How did you synchronize them?

4

@Ryan_Carlyle , they are synchronized due to mass conservation law. ) You only need to have extruder rotating at certain speed, that makes extrusion possible. It is about 60 rpm. Speed can be controlled via microstepping of the driver. I use two separate drivers, but the same input singals for pump and extruder.

5

Got it. So the screw is working as a variable-displacement assist stage and the syringe pump is providing volume control. I like it.