{"product_id":"west-system-105a-epoxy-resin-bundle-with-205a-fast-hardener-accurate","title":"WEST SYSTEM 105A Epoxy Resin Bundle with 205A Fast Hardener - Accurate","description":"\u003cp\u003eIn this review the WEST SYSTEM 105A Epoxy Resin Bundle is evaluated for woodworkers, boat repairers, and hobby builders who need a reliable, easy-to-measure epoxy system. The bundle pairs a 32 fl oz can of 105-A resin with a 7 fl oz 205-A fast hardener and a calibrated 300 Mini Pumps set, and the single biggest reason to buy is the accurate 5:1 metering that removes guesswork during mixing while delivering a fast, dependable cure for bonding and coating tasks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete bundle:\u003c\/strong\u003e Contains 105-A resin, 205-A fast hardener and calibrated pumps for a ready-to-use kit without sourcing parts separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate 5:1 mixing:\u003c\/strong\u003e Calibrated 300 Mini Pumps dispense the correct resin to hardener ratio so users get consistent mixes and predictable cures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast curing:\u003c\/strong\u003e 205 Fast Hardener develops physical properties quickly at room temperature, useful when faster turnaround is needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-viscosity resin:\u003c\/strong\u003e 105 Resin wets out wood fibers, fiberglass and metals well, making it suitable for bonding and laminating tasks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWork and cure times:\u003c\/strong\u003e Pot life at 72F (22C) is about 9 to 12 minutes and it cures to a solid state in 6 to 8 hours, giving a reasonable working window and quick handling strength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFriendly to use:\u003c\/strong\u003e The formulation has no solvent odor and relatively high flash point, so it is more pleasant than styrenated resins for bench or shop use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe bundle is ideal for woodworkers building strip kayaks and canoes, small boat repairers doing fiberglass and core work, and hobbyists who need a reliable quick-curing epoxy that bonds well to wood, fiberglass and metal. The calibrated pumps make it especially useful where accurate mix ratios matter and where repeated small batches are common.\u003c\/p\u003e\u003cp\u003eThose who need clear, high-gloss coating for a finish may want a different hardener, since 205 Fast Hardener is not intended for clear coating. Also, projects requiring very long pot life or industrial-scale volumes could be better served by other hardener choices or larger sizes.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAccurate pump metering ensures consistent 5:1 mixes and reduces waste.\u003c\/li\u003e\n\u003cli\u003eFast development of strength at room temperature lets repairs be handled the same day.\u003c\/li\u003e\n\u003cli\u003eLow-viscosity resin wets out fabrics and wood fibers for strong bonds and laminates.\u003c\/li\u003e\n\u003cli\u003ePumps and containers are durable and built for repeated use in shop environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e205 Fast Hardener is not intended for clear topcoats, limiting its use for final glossy finishes.\u003c\/li\u003e\n\u003cli\u003eShort pot life at moderate temperatures may require speedy work or small batch mixing for larger projects.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eContents\u003c\/td\u003e\n\u003ctd\u003e105-A Resin 32 fl oz; 205-A Fast Hardener 7 fl oz; 300 Mini Pumps set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMix ratio\u003c\/td\u003e\n\u003ctd\u003e5 parts resin: 1 part hardener by pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePot life at 72F (22C)\u003c\/td\u003e\n\u003ctd\u003e9 to 12 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHandle time\u003c\/td\u003e\n\u003ctd\u003eCures to solid state in 6 to 8 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull strength\u003c\/td\u003e\n\u003ctd\u003e1 to 4 days to maximum strength\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResin viscosity\u003c\/td\u003e\n\u003ctd\u003eApproximately 1000 centipoise at 72F (22C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking temperature\u003c\/td\u003e\n\u003ctd\u003eMinimum recommended 40F (4C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe WEST SYSTEM 105A bundle is a practical, value-minded kit for craftsmen who need a dependable, fast-curing epoxy with precise metering. It is especially good for woodworking, boat repair and small laminations where accurate 5:1 mixes and quick development of strength matter. Buyers seeking a clear coating hardener or long pot life for large pours should consider alternate hardeners, but for routine bonding and repairs this bundle is hard to beat for convenience and control.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan the pumps be used long term?\u003c\/strong\u003e\u003cbr\u003eThe polypropylene calibrated pumps are durable and intended to provide years of dependable metering when cleaned and stored properly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 205 Fast Hardener suitable for clear topcoats?\u003c\/strong\u003e\u003cbr\u003eNo, 205 Fast Hardener is not intended for clear coating; choose a different hardener if you need a glossy, clear finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow precise is the mix ratio with the pumps?\u003c\/strong\u003e\u003cbr\u003eOne pump stroke of resin for each pump stroke of hardener yields approximately 0.8 fl oz of the exact 5:1 mix ratio for consistent results.\u003c\/p\u003e","brand":"West System","offers":[{"title":"Default Title","offer_id":48261480677595,"sku":"B07JHC28CV","price":108.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61qcsO30bUL._SL1000.jpg?v=1778236211","url":"https:\/\/gearmusthave.com\/products\/west-system-105a-epoxy-resin-bundle-with-205a-fast-hardener-accurate","provider":"GearMustHave","version":"1.0","type":"link"}