Continously Extruding 3D Printed Tubes with Compressed Air
[Jan] of [Roetz 4.0] has a unique approach to multi-material 3D printing: he’s designed an extruder which takes two different materials and extrudes one as a shell around the other. …read more
https://hackaday.com/2026/08/09/continously-extruding-3d-printed-tubes-with-compressed-air/