{"product_id":"milled-fiberglass-structural-filler","title":"Milled Fiberglass Fibers (Structural Filler)","description":"\u003cp\u003eWhen maximum structural integrity is required, \u003cstrong\u003eMilled Fibers\u003c\/strong\u003e are the ultimate reinforcement additive. These are high-purity glass filaments finely cut into a dense glass powder, designed to be mixed with resin to create an incredibly strong, impact-resistant structural putty.\u003c\/p\u003e\n\n\u003cp\u003eMilled fibers are the industry standard for reinforcing high-stress areas on a surfboard. Because they consist of actual glass strands rather than hollow spheres, they provide significantly higher tensile strength and compression resistance than Q-Cel or Cab-O-Sil. This makes them the primary choice for \"poured\" applications where strength is non-negotiable.\u003c\/p\u003e\n\n\u003ch3\u003eCommon Applications:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFin Box Installation:\u003c\/strong\u003e Use as a structural \"grout\" around fin boxes to prevent cant-line failure and blowout.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeash Plug Reinforcement:\u003c\/strong\u003e Ideal for setting leash plugs to ensure they stay anchored under heavy tension.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStructural Repairs:\u003c\/strong\u003e Perfect for rebuilding shattered rails or crushed foam where structural \"meat\" is needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Impact Areas:\u003c\/strong\u003e Use anywhere on the board that requires extra density and strength.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003ePro Tip:\u003c\/strong\u003e Milled fiber paste is very heavy and difficult to sand. Use it only for internal structural fills, and cap the repair with a layer of fiberglass cloth or a sandable Q-Cel mixture for a clean finish.\u003c\/em\u003e\u003c\/p\u003e","brand":"Shapers Supply","offers":[{"title":"8oz","offer_id":52747176247595,"sku":null,"price":5.0,"currency_code":"USD","in_stock":true},{"title":"Quart","offer_id":52747176280363,"sku":null,"price":17.0,"currency_code":"USD","in_stock":true},{"title":"50 LB Bag","offer_id":52747176313131,"sku":null,"price":148.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/6634\/1675\/files\/MilledFibers.webp?v=1775593009","url":"https:\/\/onerevolversurfboards.com\/products\/milled-fiberglass-structural-filler","provider":"One Revolver Surfboards","version":"1.0","type":"link"}