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A comment on Show HN: 3D print Z reinforcement via injected loops.

Re:Show HN: 3D print Z reinforcement via injected loops by coryrc on Sunday June 14, 2026 @12:07PM (#48528816)
Why do you think this is better than the old practice of filling straight holes a few layers deep?
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Re:Show HN: 3D print Z reinforcement via injected loops by ricardobeat on Sunday June 14, 2026 @04:37PM (#48532377)
Is that available in any of the standard slicers?
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Re:Show HN: 3D print Z reinforcement via injected loops by stirfish on Sunday June 14, 2026 @04:53PM (#48532559)
I think that's called z-pinning, and it might not be because of patents. I'm not sure though.
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Re:Show HN: 3D print Z reinforcement via injected loops by mgunlogson on Tuesday June 16, 2026 @12:01AM (#48550437)
because the plastic has to displace air.

This method seals the nozzle against the tube and injects under pressure (theoretically). And leave a path for air to escape. Pretty much a micro version of injection molding

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