Halyard Stopper Ball — Parametric (3D Print, Free)

🔖 Art. ML3D_0039

🔖 Art. ML3D_0039 FREE parametric HALYARD STOPPER BALL by MarineLab3D. A ball stopper that threads onto your halyard (or any line) and stops it from running up into the mast or through a block/sheave. 📏 Through-hole = halyard Ø + 1 mm (set your line size) 🪢 A wider seat (+75%) at the bottom houses the stopper knot, blended to the hole with a chamfer (svasatura) 🟢 Rounded / eased openings so the line does not chafe 🌀 Spherical body — smooth, snag-free 🧵 Best printed in PETG, ASA or Nylon for outdoor/UV durability. Use “Customize dimensions” to set your halyard Ø, preview in 3D, then download free.

Related designs: Low-Friction Rope Ring — Grooved, Sized to Your Line (Parametric, 3D Print), Rope Sheave / Pulley for Dyneema · Spectra · Polyester (Parametric, 3D Print), Deck Rope Organizer / Fairlead — 1–5 Low-Friction Eyes (Parametric, 3D Print)

Disclaimer. MarineLab3D sells digital 3D files, not finished parts. The strength, fit and safety of the printed part depend on your printer, material, settings and assembly, which are outside our control. Verify all dimensions before printing, use the recommended material and inspect every print. Provided “as is” without warranty; to the maximum extent permitted by law MarineLab3D is not liable for any damage, loss or injury arising from their use. Not certified marine equipment. Full Disclaimer & Terms of Use.

⚠ Load-bearing / pressure part. Suggested loads or pressures are indicative estimates for a well-printed part in the recommended material, not guarantees. Run your own load/pressure test before relying on it. Do not use for life-safety or critical applications (lifelines, harness/tether attachment, standing rigging, steering, gas or fuel systems) unless independently tested and certified by a qualified professional.