{"product_id":"west-system-105b-epoxy-resin-bundle-with-205b-fast-hardener-fast","title":"WEST SYSTEM 105B Epoxy Resin Bundle with 205B Fast Hardener - Fast","description":"\u003cp\u003eOur review of this WEST SYSTEM epoxy bundle finds it ideally suited for builders and repairers who need a dependable, fast-curing structural epoxy. The kit pairs 105-B resin with 205-B fast hardener and calibrated 300 mini pumps so users get the correct 5:1 mix ratio without guesswork; that single convenience is the biggest reason to buy. This review focuses on ease of use, cure speed, and versatility for wetting out wood, fiberglass and fabrics in common workshop and marine repair scenarios.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremeasured mini pumps:\u003c\/strong\u003e Calibrated pumps dispense the correct 5 to 1 mix ratio so each stroke yields an accurate 0.8 fl oz epoxy mix, reducing measuring errors and waste.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast hardener:\u003c\/strong\u003e 205-B fast hardener gives a rapid room temperature cure that develops strength quickly and shortens fixture time for many bonding tasks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow viscosity resin:\u003c\/strong\u003e 105-B resin is a clear, pale yellow, low-viscosity liquid that wets out wood fibers and reinforcing fabrics effectively for strong bonds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide compatibility:\u003c\/strong\u003e The resin bonds with wood, fiberglass, reinforcing fabrics and many metals, making it useful for construction and repair projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWork and cure window:\u003c\/strong\u003e Pot life at 72F (22C) is about 9 to 12 minutes with a solid state in 6 to 8 hours and full strength in 1 to 4 days, allowing paced work without long waits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow odor and safer handling:\u003c\/strong\u003e The system contains no solvents and has a relatively high flash point, giving a friendlier working environment than styrenated resins.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis epoxy bundle is aimed at serious DIYers, boatbuilders, canoe and kayak builders, and professional repair shops that need a reliable structural epoxy that cures quickly at room temperature. The included large resin can and fast hardener cover projects from strip kayak lamination to patching fiberglass boat decks and horizontal surface coatings where rapid development of physical properties is important.\u003c\/p\u003e\u003cp\u003eThose needing a long pot life for large pours or a formulation intended specifically for clear glossy topcoats should look elsewhere, since 205-B fast hardener cures rapidly and is not recommended for clear coating applications.\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, durable pumps simplify mixing and reduce waste for repeatable 5:1 mixes.\u003c\/li\u003e\n\u003cli\u003eRapid cure develops usable strength fast, speeding repair and assembly workflows.\u003c\/li\u003e\n\u003cli\u003eLow-viscosity resin wets out fabrics and wood well for good adhesion and laminations.\u003c\/li\u003e\n\u003cli\u003eLow odor and no solvents improve shop comfort during use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eShort pot life at room temperature limits large batch work and requires quick application.\u003c\/li\u003e\n\u003cli\u003e205-B is not formulated for clear coating, so additional products are needed for finished glossy surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eResin\u003c\/td\u003e\n\u003ctd\u003e105-B Epoxy Resin, clear pale yellow, low viscosity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardener\u003c\/td\u003e\n\u003ctd\u003e205-B Fast Epoxy Hardener, medium viscosity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMix ratio\u003c\/td\u003e\n\u003ctd\u003e5 parts resin to 1 part hardener by volume (5:1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePot life\u003c\/td\u003e\n\u003ctd\u003e9 to 12 minutes at 72F (22C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCure times\u003c\/td\u003e\n\u003ctd\u003eSolid in 6 to 8 hours; full strength in 1 to 4 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded pumps\u003c\/td\u003e\n\u003ctd\u003eCalibrated 300 Mini Pumps set, 0.8 fl oz per mixed stroke\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\u003eThis WEST SYSTEM bundle delivers practical value for users who need a dependable, fast-curing structural epoxy with accurate dispensing built in. It is especially good for boat repair, wood laminations and horizontal applications where quick strength gain and precise mixing matter. Buyers who need long working times or a product intended for high-gloss clear topcoats should consider alternate hardener options, but for straightforward bonding and laminating this kit is a sensible, time-saving choice.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan the mini pumps be trusted for accurate mixing?\u003c\/strong\u003e\u003cbr\u003eThe calibrated pumps dispense resin and hardener at the correct 5:1 ratio and yield about 0.8 fl oz of mixed epoxy per matched stroke, so they are suitable for repeatable mixes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 205-B hardener suitable for clear coating?\u003c\/strong\u003e\u003cbr\u003eNo, 205-B fast hardener is not intended for clear coating applications; use a recommended slower hardener if a glossy clear coat is required.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow quickly will the epoxy cure at room temperature?\u003c\/strong\u003e\u003cbr\u003eAt about 72F (22C) pot life is 9 to 12 minutes, it cures to a solid in 6 to 8 hours and reaches maximum strength in 1 to 4 days.\u003c\/p\u003e","brand":"West System","offers":[{"title":"Default Title","offer_id":48185193398491,"sku":"B07JKYCV8G","price":203.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/8109RbGnsLL._SL1500.jpg?v=1769607388","url":"https:\/\/gearmusthave.com\/products\/west-system-105b-epoxy-resin-bundle-with-205b-fast-hardener-fast","provider":"GearMustHave","version":"1.0","type":"link"}