Fiberglass resin hardener substitute. Jan 7, 2010 · This is the effect people are trying to get when the resin the Pepakura paper model, to try to stiffen the paper enough to do other work. Please try again later. Aug 15, 2013 · Check my topic: The official quest for the best fiberglass/resin alternative. Learn how to replace Bondo hardener with effective alternatives for seamless repairs. After much searching around the web ive found multiple tricks when used in order can help save your piece. This guide highlights five top options that pair well with common resins, deliver reliable curing, and resist water and wear. However, there are a few common mistakes that people make when working with fiberglass and resin. Oct 9, 2025 · Bondo fiberglass resin liquid hardener is designed specifically for use with Bondo fiberglass resin and Bondo metal reinforced filler. Try using heat, sunlight or spraying more catalyst on the surface. They both serve the same purpose. Learn how to use MEKP catalyst with polyester and vinyl ester resins for fiberglass repair or construction. . Find the best solutions here. I doubt that you're going to be able to get the resin to harden up after the fact, even if you somehow mix the catalyst onto the goopy resin currently on the pepakura bio. 2 days ago · Learn how resin, fiberglass, and carbon fiber can strengthen balsa wood for your specific project needs. Each entry includes key features to help you choose based on curing time, compatibility, and application needs. Learn how to save your fiberglass project if you did not add enough catalyst, the chemical that hardens the resin. Fiberglass Resin Liquid Hardener - Use as a bonding agent- quickly and easily create a bond between multiple surfaces. Perfect for boat owners and DIY enthusiasts using polyester. Jan 24, 2024 · The 3M Bondo Fiberglass Repair Kit provides an affordable solution for fixing holes, cracks, and damaged areas on boats, cars, and other items without replacing entire parts. Jul 12, 2025 · Fiberglass Resin Alternative Recently a fiberglass resin alternative has been designed and goes by the name of AroStruct from VersaFlex and turns out to be a great substitute for resin. Are there any alternatives to MEK/MEKP? I don't want to use is because of the dangers. An error occurred while the page was being generated. Jul 17, 2017 · Continue coating fiberglass cloth with the resin and hardener until the surface is covered, or the mixture begins to harden. J-B Weld epoxies and adhesives create the world's strongest bond for your repair job, allowing you to be your strongest self. Discover alternative techniques and tips to achieve a strong, durable finish for your resin projects. Oct 6, 2022 · Fiberglass and resin are two popular materials used by boat builders, car restorers and other fiberglass enthusiasts. In this article, I will delve into the world of liquid hardeners and how they enhance the durability and performance of fiberglass. Like dozer said any Auto parts store will have it , try NAPA or Autozone . If you don’t want to mess with fiberglass you can use other materials with the epoxy like a cotton fabric, or even just the cardboard. I don't have a boat, I'm a maker, but I figured this would be the best place to ask since boatbuilders use this stuff to harden polyester resin. Hit your piece with a heat gun see if you can get your resin to really bubble and Mar 2, 2007 · 15 years old??? Polyester and epoxy resin systems both have a shelf life, but neither of them are anywhere near 15 years. The fiberglass goes on the outside not the inside. Our Bondo® Fiberglass Repair Kit lets users do it themselves for easy, cost-effective, shop quality auto body repair. vinyl ester and gel coats. 74 fl. May 19, 2011 · Or any other type of hardening agent. Bondo - Home Solutions 0. Nov 7, 2025 · Explore reliable Bondo hardener substitutes. How much hardener do you use when mixing small quantities, say 250 ml or 500 ml? I tried to mix using teaspoons and syringes, but it always dry too fast or stays sticky! That’s where liquid hardener for fiberglass resin comes in. Fiberglass cloth, also known as fiberglass fabric, is low in weight and becomes strong when combined with resin. Dec 27, 2014 · Help! alternative fiberglass resin? Dock Talk Page 1 of 2 1 2 Next Return to Dock Talk Quick Reply Message: Posting Quick Reply - Please Wait « Previous Thread | Next Thread » Similar Threads Category Thread Thread Starter Forum Replies Last Post Discussion Finding the right hardener is essential when working with fiberglass resin for auto, marine, or home repairs. "Plastic Resin Glue" was suggested, and 1lb of it (powder, mix w/water to activate) is like $7 which if it can get the results fiberglass does then it's definately a better deal then fiberglass itself (especially at $20+ a small can) Then, will epoxy resin harden without hardener? It is only when mixed with an epoxy hardener that they can cure properly. For those that works with this stuff everyday. When mixed with the resin, they kick off an exothermic reaction. Additionally, will Bondo hardener work with fiberglass resin? Oct 24, 2014 · Im definitely a novice pep-er but ive recently had a problem with my resin not hardening on my project. I am searching and as for now I thing textile hardener put on textile on the paper in the inside the best option. Use Bondo® Fiberglass Resin Liquid Hardener for a complete range of auto body repair, interior and exterior home repairs including tubs, showers, sinks, pools, hot tubs, boats and more. Polyester has a max shelf life of 6 to 12 months from date of manufacture and the MEKP hardener 12 to 24 months. By setting up a clean workspace, pouring with precision, and monitoring the curing process, you can achieve professional-quality results. It's used as Hardener for Fiberglass resin (which is nothing but Polyester resin) . The fiberglass hardener is methyl-ethyl-ketone peroxide (MEKP) with some added stabilizers. Learn effective methods on how to harden resin without using hardener. It works well for building composite parts, making molds and for fiberglass repairs. If resin and hardener mix becomes stringy you should discard the batch and mix a new one. If applied onto a floor without the hardener, the resin would remain a near liquid indefinitely and could not transform into a durable flooring system. Feb 24, 2022 · Have you ever wondered if resin can be used without a hardener? This is a question that many people ask, and the answer is yes - resin can be used without a hardener. LIQUID HARDENER (METHYL ETHYL KETONE PEROXIDE) Description Fast-acting MEKP (clear methyl ethyl ketone) formula designed for use in hardening fiberglass resin. Perfect for DIY enthusiasts seeking quick and easy solutions. It can be tricky to diagnose what causes resin not to fully cure when mixed. The hardener must be used with a resin or filler for repairing autos, tubs, showers, sinks, pools, hot tubs, boats and more. Normally, you would only substitute things like carbon fiber, kevlar fiber, spectre fiber, etc for fiberglass, if you actually intend it to be strong. oz. Jul 29, 2025 · Conclusion Successfully working with resin requires careful attention to detail and adherence to the recommended steps and guidelines on how to harden resin without hardener. Apr 26, 2007 · They have the quart and gallon cans of General purpose Resin in the same area . It's often used in hobby and DIY projects because it's relatively inexpensive and easy to work with. We would like to show you a description here but the site won’t allow us. The cured resin is compatible with nearly any paint system including gel coat and marine paint. The heat that results is what causes the resin to polymerize (harden). Even for "inside use" instead of Outside use. Jun 5, 2024 · So I screwed up and laid down my firberglwes and resin and not sure if I didn’t add enough hardener to it! Can I mix up little more and go over it and be fine? Fixing uncured fiberglass resin with Dec 15, 2009 · The hardener you add (methyl ethyl ketone peroxide [MEKP] in the case of bondo and polyester resin) creates an exothermic (heat producing) reaction when combined with the monomeric resin in the right proportions, which is why resin and bondo get hot while they cure. It includes everything needed for a successful repair —fiberglass resin, liquid hardener, cloth, mixing tray, stick, and plastic spreader. Any suggestions would be greatly appreciated thank you! Aug 12, 2010 · I don't know if the MEKP catalyst degraded over time, or if I just didn't mix things correctly, but that's the point when I gave up on fiberglass resin and used Sintra instead. The repair kit includes cloth, resin and hardener, along with a mixing tray, mixing stick and a spreader for straightforward application over cracks and metal rust-outs. This hardener is easily mixed with resin or filler; a chemical reaction creates an extremely strong, waterproof repair material. Or you could old school and use strips of paper and liquid starch, paper mâché, or even white glue. Concentrated liquid fiberglass resin formula. They will soak up the resin and become stiff. Cures fiberglass resin, provides quick strong bond. zbdaay njbmrg gbzcof pzbjvi xqzyw dnpzhky ezkk olann kiwt fjqt