Sewing Machine Thread Spool Pin (No Supports)
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An adapter to fit over the bobbin threader pin that is 3D printable
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Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
If wanted, see my Bambu profile for this model.
A simple, clean thread spool pin designed to fit over the bobbin winder pin on many sewing machines.
Originally modeled for a Brother machine, but should fit any pin ≤6.4mm diameter. The Brother pin measures ~6.1–6.2mm and uses a spring, giving this a snug, secure fit.
Unlike many designs, this prints cleanly with no supports.
Design Notes
Two-piece design:
Vertical rod
Spool support disc (press-fit onto rod)
Friction fit is typically sufficient, but glue can be used depending on printer tolerances
Optimized for easy, reliable printing
Versions Included
Standard (vertical rod)
Includes brim on the rod in the print profile for stability
Adequate strength for typical use
Side-printed rod version
Layer lines run along the rod → increased strength
Includes flat cut for stable printing
Print Settings
Layer height: 0.20 mm
Supports: None
Materials: PLA, PLA+, or PETG
Brim:
Recommended for upright rod (included in profile)
Optional for side-printed version
Print Orientation
Rod:
Vertical (standard version) or
Horizontal (strength version)
Disc:
Flat on bed, fillet facing up
Fit Notes
Designed for pins up to 6.4mm diameter
Depending on your printer tolerances, you may choose to glue the disc to the rod. This is not required— even a loose fit functions correctly as the disc simply supports the spool.