{"product_id":"halyard-stopper-ball-parametric-3d-print-free","title":"Halyard Stopper Ball — Parametric (3D Print, Free)","description":"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.\u003cbr\u003e\u003cbr\u003e📏 Through-hole = halyard Ø + 1 mm (set your line size)\u003cbr\u003e🪢 A wider seat (+75%) at the bottom houses the stopper knot, blended to the hole with a chamfer (svasatura)\u003cbr\u003e🟢 Rounded \/ eased openings so the line does not chafe\u003cbr\u003e🌀 Spherical body — smooth, snag-free\u003cbr\u003e\u003cbr\u003e🧵 Best printed in PETG, ASA or Nylon for outdoor\/UV durability.\u003cbr\u003e\u003cbr\u003eUse “Customize dimensions” to set your halyard Ø, preview in 3D, then download free.","brand":"MarineLab3D","offers":[{"title":"Default Title","offer_id":52568252318008,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1002\/2889\/0936\/files\/sfera-fermadrizza-hero.png?v=1782403634","url":"https:\/\/marinelab3d.com\/products\/halyard-stopper-ball-parametric-3d-print-free","provider":"MarineLab3D","version":"1.0","type":"link"}