{"title":"Tooling Gelcoat \u0026 Resin","description":"\u003cp\u003eThe materials a fiberglass mold is built from. Orange or black tooling gelcoat goes on the plug first, unwaxed so the backup laminate bonds to it, in a color that shows thin spots while you spray. Isophthalic tooling resin backs it up: it shrinks less and holds up hotter than a standard layup resin, so the mold keeps its shape through a production run.\u003c\/p\u003e\u003cp\u003eWant it sized for you? See the \u003ca href=\"\/collections\/mold-making-kits\"\u003emold making kits\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"orange-tooling-gelcoat-no-wax","title":"Orange Tooling Gelcoat with Hardener - No Wax","description":"\u003cp\u003eThe surface coat for building a mold. Orange is not decoration: against white laminate it shows you exactly where the gelcoat is thin while you are still \u003ca href=\"\/products\/gelcoat-dump-gun\"\u003espraying\u003c\/a\u003e, and later it shows wear and pinholes on a working mold before a part picks them up. Unwaxed by design so the backup laminate bonds chemically to it.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCatalyze at about 2% MEKP, roughly 19 cc (2\/3 oz) per quart or 76 cc (2.5 oz) per gallon, included\u003c\/li\u003e\n\u003cli\u003ePot life about 15 to 20 minutes at 80 F; up to about 2.5% MEKP in a cold shop\u003c\/li\u003e\n\u003cli\u003eUnwaxed so the tooling laminate bonds to it without sanding\u003c\/li\u003e\n\u003cli\u003eApply into waxed or PVA-prepped molds, then back it with isophthalic tooling resin and mat or cloth\u003c\/li\u003e\n\u003cli\u003eStore at 60 to 75 F; shelf life 3 to 6 months unopened\u003c\/li\u003e\n\u003cli\u003eSizes: quart, gallon and 5 gallon (the 5 gallon ships as five 1-gallon jugs)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBuild it to a real film thickness. A mold surface coat that is too thin telegraphs the backup laminate print into every part you pull off it.\u003c\/p\u003e","brand":"Boat Suppliers","offers":[{"title":"Quart","offer_id":51148730827054,"sku":"GEL-OR025","price":42.95,"currency_code":"USD","in_stock":true},{"title":"Gallon","offer_id":51148730859822,"sku":"GEL-OR100","price":124.95,"currency_code":"USD","in_stock":true},{"title":"5 Gallon","offer_id":51148730892590,"sku":"GEL-OR500","price":557.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0840\/4071\/2494\/files\/Boat_Suppliers_Orange_Tooling_Gelcoat_with_Hardener_-_1_Quart_Kit.jpg?v=1776813612"},{"product_id":"black-tooling-gelcoat-no-wax","title":"Black Tooling Gelcoat with Hardener - No Wax","description":"\u003cp data-end=\"2165\" data-start=\"1767\"\u003eBlack Tooling Gelcoat delivers a strong, durable surface finish for fiberglass molds. Formulated for high-performance composites, it creates a smooth mold surface with excellent gloss and release properties. When combined with \u003ca title=\"Isophthalic Polyester Tooling Resin\" href=\"https:\/\/boatsuppliers.com\/products\/404-tooling-polyester-resin-isophthalic\"\u003eIsophthalic Tooling Resin\u003c\/a\u003e and \u003ca title=\"Fiberglass Mat\" href=\"https:\/\/boatsuppliers.com\/collections\/fiberglass-mat\"\u003efiberglass reinforcement\u003c\/a\u003e, this gelcoat ensures precision results for professional mold-making projects. Includes \u003ca title=\"MEKP Catalyst\" href=\"https:\/\/boatsuppliers.com\/products\/mekp-hardener\"\u003eMEKP catalyst\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"bs-spec-block\"\u003e\n\u003c!--bs-body-v1--\u003e\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003ctable class=\"bs-specs\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBase\u003c\/th\u003e\n\u003ctd\u003epolyester tooling gelcoat, no wax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eColor\u003c\/th\u003e\n\u003ctd\u003ehigh-opacity black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd\u003equart, gallon, 5 gallon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCatalyst\u003c\/th\u003e\n\u003ctd\u003eMEKP approx 2% (19 cc per quart, 76 cc per gallon), included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePot life\u003c\/th\u003e\n\u003ctd\u003eapprox 15 to 20 min at 80°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eApplication\u003c\/th\u003e\n\u003ctd\u003ebrush or \u003ca href=\"\/products\/gelcoat-dump-gun\"\u003espray\u003c\/a\u003e into a waxed or PVA-prepped plug or mold; back with isophthalic tooling resin plus mat and cloth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eStorage\u003c\/th\u003e\n\u003ctd\u003e60 to 75°F, dry; 3 to 6 months unopened\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eSame tooling gelcoat as our orange, same sizes, same catalyst; the difference is what the color tells you. Black shows every scratch, swirl and pinhole when you cut and polish the finished mold surface, so choose it for tools you will bring to a high gloss and inspect hard. Choose \u003ca href=\"\/products\/orange-tooling-gelcoat-no-wax\"\u003eorange tooling gelcoat\u003c\/a\u003e when you want to see coverage and thin spots while you are spraying and laminating. Both are no-wax on purpose: the backup laminate bonds chemically to the gel. The build sequence is in \u003ca href=\"\/blogs\/composites\/how-to-make-a-fiberglass-mold-complete-step-by-step-guide\"\u003ehow to make a fiberglass mold\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Boat Suppliers","offers":[{"title":"Quart","offer_id":51148749373742,"sku":"GEL-BL025","price":42.95,"currency_code":"USD","in_stock":true},{"title":"Gallon","offer_id":51148749406510,"sku":"GEL-BL100","price":124.95,"currency_code":"USD","in_stock":true},{"title":"5 Gallon","offer_id":51148749439278,"sku":"GEL-BL500","price":557.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0840\/4071\/2494\/files\/Boat_Suppliers_Black_Tooling_Gelcoat_with_Hardener_-_1_Quart_Kit.jpg?v=1776813612"},{"product_id":"404-tooling-polyester-resin-isophthalic","title":"Isophthalic Polyester Tooling Resin with Hardener","description":"\u003cp\u003eIsophthalic resin for mold building. Compared to a standard orthophthalic layup resin it shrinks less, holds up hotter and resists chemical attack better, which is exactly what a mold needs if it is going to hold shape through a production run instead of moving on you after ten parts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCatalyze at 1.25% MEKP, about 1.6 oz (47 cc) per gallon, included\u003c\/li\u003e\n\u003cli\u003eViscosity 325 to 525 cps, thixotropic so it holds on a vertical mold face\u003c\/li\u003e\n\u003cli\u003eGel time 20 to 24 minutes at 1.25% MEKP\u003c\/li\u003e\n\u003cli\u003eHeat distortion temperature 223 F (106 C), the highest of our polyesters\u003c\/li\u003e\n\u003cli\u003eTensile strength 7,300 psi on a post-cured sample\u003c\/li\u003e\n\u003cli\u003eUnwaxed, so laminate layers bond without sanding between\u003c\/li\u003e\n\u003cli\u003eSizes: quart, gallon and 5 gallon; drums available by quote\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBack an orange tooling gelcoat with 404 and mat, and let each stage cure before you build thickness. Rushing the laminate is what puts print-through in a brand new mold.\u003c\/p\u003e","brand":"Boat Suppliers","offers":[{"title":"1 Quart","offer_id":51159729701166,"sku":"SM-404025","price":32.95,"currency_code":"USD","in_stock":true},{"title":"1 Gallon","offer_id":51159729733934,"sku":"SM-404100","price":79.95,"currency_code":"USD","in_stock":true},{"title":"5 Gallons","offer_id":51159729766702,"sku":"SM-404500","price":339.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0840\/4071\/2494\/files\/BoatSuppliers_Isophtalic_Tooling_Resin.jpg?v=1772666289"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0840\/4071\/2494\/collections\/Boat_Suppliers_Orange_Tooling_Gelcoat_with_Hardener_-_1_Quart_Kit.jpg?v=1792773528","url":"https:\/\/boatsuppliers.com\/collections\/tooling-gelcoat-resin.oembed","provider":"Boat Suppliers","version":"1.0","type":"link"}