Filament Welder / Splicer / Joiner — Fully Printed

Model Overview & Print Notes

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

Print profiles