Continously Extruding 3D Printed Tubes with Compressed Air
Continously Extruding 3D Printed Tubes With Compressed Air No comments by: Aaron Beckendorf August 9, 2026 Title: Copy Short Link: Copy [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. This opens up some interesting possibilities, such as a conductive filament surrounded by an insulating shell; [Jan], however, didn’t have an immediate use for the process, so he moved on to a related technique: extruding plastic tubes with a compressed-air core. The extruder he used for this was a variation on the dual-material extruder; it takes in two strands of filament, melts them, and extrudes them as a shell around the outlet of a compressed-air line, which was controlled by a high-precision pressure regulator.
- ▪Continously Extruding 3D Printed Tubes With Compressed Air No comments by: Aaron Beckendorf August 9, 2026 Title: Copy Short Link: Copy [Jan] of [Roetz 4.0] has a unique approach to multi-material 3D printing: he’s designed an extruder whic
- ▪This opens up some interesting possibilities, such as a conductive filament surrounded by an insulating shell; [Jan], however, didn’t have an immediate use for the process, so he moved on to a related technique: extruding plastic tubes with
- ▪The extruder he used for this was a variation on the dual-material extruder; it takes in two strands of filament, melts them, and extrudes them as a shell around the outlet of a compressed-air line, which was controlled by a high-precision
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| Original publisher | Hackaday |
| Canonical URL | https://hackaday.com/2026/08/09/continously-extruding-3d-printed-tubes-with-compressed-air/ |
| Publication time | Sun, 09 Aug 2026 11:00:50 +0000 |
| Retrieval time | 2026-08-09T11:05:47.356Z |
| Last seen | 2026-08-09T11:05:47.356Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | 41j7Zr4lj3uV · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
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| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Continously Extruding 3D Printed Tubes With Compressed Air No comments by: Aaron Beckendorf August 9, 2026 Title: Copy Short Link: Copy [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. This opens up some interesting possibilities, such as a conductive filament surrounded by an insulating shell; [Jan], however, didn’t have an immediate use for the process, so he moved on to a related technique: extruding plastic tubes with a compressed-air core.
…
Excerpt limited to ~120 words for fair-use compliance. The full article is at Hackaday.
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