Filament Welder / Splicer / Joiner — Fully Printed
Print Profile(2)
Bill of Materials
Description
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Never waste a partial spool again. This fully 3D-printed filament welder lets you splice two filament ends together in seconds — no metal hardware, no PTFE tubes, completely self-contained.
Assembly: The hinge is assembled by threading a short piece of 1.75 mm filament through the hinge pin hole and clipping both ends flush. That's it — no screws, no metal pins, no glue.
How it works:
- Straighten both filament ends (by hand or with pliers)
- Insert one end into each block
- Heat both ends simultaneously with a soldering iron set to printing temperature
- Immediately push the two blocks together and hold for at least 5 seconds
- Trim the weld bead flush with a filament cutter (mini flush cutters)
- Optional: smooth with a small file for a clean, even result
Compatible with: 1.75 mm filament
Why use a filament welder?
- Join leftover spools to avoid mid-print failures
- Switch colors mid-roll without a filament runout sensor
- Use up nearly empty spools without waste
If you’ve found my models useful or simply like what I do, feel free to support me with a coffee ☕. Thank you so much!
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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