It is two-part and comes as a filler and a hardener. Just as with polyester laminating resin, the cure time of bondo can be adjusted with the amount of hardener used. If it feels dry, it certainly is. crafts, science & engineering, design, and technology. Spread the filler on the repair slightly higher than the depression or contour, and dont worry about ridges or high spots. 2-4 min. Plastic body fillers are intended for small dings and smoothing out warped panels, not a major repair itself. Mix a larger amount of Bondo and hardener if the area you need to patch is larger. Bondo dries within 15 minutes of an application under normal conditions and is good to sand. Ideal for almost any wood surface, the two-part wood filler forms a permanent bond and will not shrink. Bondo is loved for its inherently great qualities. Been a few days - And still a little bit pliable Heat generally will help, but in your specific case not in the sense of giving it a few passes with the old heat gun. Larry Cotton is a semi-retired power-tool designer and part-time community college math instructor. Surform or rasp Sandpaper Show More Show Less Compare. You will, however, sacrifice the ease of sanding as youll need more muscle work then, as it will have hardened further. In theory, properly mixed Bondo can be applied in any thickness, but beware of gravity-induced sagging. To avoid scratching the surrounding area, keep the sandpaper on the filler only and dont let it slide onto the painted surface. Yes Heat does have some effect on resins.. Follow along with the video below to see how to install our site as a web app on your home screen. The stuff is just way to cheep to keep it around that long. But not with Bondo, which dries in 10-15 minutes if prepared correctly and within a room temperature of 77F. Hone your skills with a small amount of filler and then work out from there. Bondo or your favorite polyester body filler Mixing board Spreaders Putty Knife Razorblade scraper Surform or rasp Sandpaper Acetone Disposable gloves Dust mask Eye protection Mixing sticks Contour gauge Metal Prep Etch Primer Prepare for the worst Mike Bumbeck Color is the key: More hardener equals faster cure time, and warmer is faster, but red is too hot. What about painting? wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Better to go by color than amout or %. Use it to try out great new products and services nationwide without paying full pricewine, food delivery, clothing and more. Read and follow the directions on the container, especially the hazard warnings. I'm not saying no one can, but I would sure be impressed to see it. This industry leading body filler quickly and easily fills in dents, scrapes, chips, cracks, and rust holes. After 10 minutes, use 36-grit sandpaper to smoothen out the surface. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! By using our site, you agree to our. Theres a critical point in the curing process where excess filler, while still slightly flexible, can be removed quickly and easily with a body-filler experts roughing tool of choice, a Stanley Surform. Often times when collision shops reskin a door they'll use the wrong product on the intrusion beam and it will show with skin deformation during extreme temperature changes-not enough to notice on most daily drivers but on a super straight car it sticks out like a sore thumb. Body filler that will be exposed to water should be painted. Please make sure that you are posting in the form of a question. It must be completely cured before painting over it. 45 - 50F(7 - 10C); if using below 65 F, the amount of hardener used should be slightly increased. Won't harden unless it's in the sun. So, now you know the drying rate to anticipate with Bondo and what influences it, whats the significance of this piece of information? When the surrounding temperatures are higher, the process is quickened. By using this service, some information may be shared with YouTube. Sorry, we were unable to perform your search at this time. Bondo Body Repair Kit, Original Formula for Fast, Easy Repair & Restoration of Your Vehicle, 00310, Filler 12.6 oz and Hardener: 0.5 oz, 1 Kit. It does not move or or behave like a metal body panel. If you reside in tropical climates where it is primarily temperate, you can expect Bondo to dry even faster. Bondo Red Cream Hardener refill is designed to be used with Bondo Body Fillers, Bondo-Glass. The vinyl wash also has a very short window (S-W is only four hours) and it can't be sanded. If there are no streaks in the filler or areas that are darker or lighter, it is mixed well. It is not the same as the E2G980, PPG DPX171 would be much closer and more like Variprime (615S) also. Include your email address to get a message when this question is answered. Please try again later. However, it is also a brand on its own. It cures fast - in as little as 15 minutes it can be easily sanded by hand or power tools. Should I apply the guide coat after sanding down the first coat of bondo? Curing time depends primarily on ambient temperature and how much hardener you add. Now I'm not an expert on Bondo but if it's anything like Resins, then here's what usually happens when you add the hardener.. Quick and Easy Ways to Roll Up a Stuck Power Window, How to Replace 3 Types of Windshield Wiper Blades, How to Change Your Windshield Wiper Blades & Arms, How to Operate Windshield Wipers: Turning Wipers On and Off. Disposable gloves are highly recommended. The miraculous blend of polyester resins and cream hardener known as Bondo can make wavy panels straight and door dings disappear. Sanding in straight lines creates waves in the filler, so always sand in a criss-cross pattern. Dont try to do it all at once, that is just wasting time and harder to do. Experiment to get the right Bondo mixture. One school of thought suggests bare metal, then Bondo. The Fora platform includes forum software by XenForo. Contour gauge And when this happens, you might wonder whether you got the fluke of the batch or a counterfeit. If you apply a thicker layer of the filler, it will take longer to cure. On many occasions, temperature alters chemical reactions. If it was a regular filler it might bug me alittle to have it set out. Last Updated: September 10, 2019 . Power sanders are OK to break the surface and knock down any high spots, but hand sanding with the body contour is the best way forward. Generally, if paint will stick, so will Bondo. Why do you recommend mixing bondo on something that will soak up resins and solvents in the bondo and the catalyst? Your question might be answered by sellers, manufacturers, or customers who bought this product. curated by us, the people behind Make: and the Maker Faire. The hardener is, however, comparably small. If mixed correctly, Bondo cures in a maximum of 45 minutes and is paint-ready then. Bondo cannot dry without a hardener. However, this time is largely dependent on two things: the temperature of the surroundings and the amount of hardener combined with the filler. Once youve mixed the Bondo and hardener, apply the mixture in thin coats about 1/8 inch thick and press it down into the cracks. wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. This article has been viewed 146,087 times. 6. Stop when youre close to the final shape, then smooth with progressively finer grades of sandpaper. Mix only the amount of resin and hardener you need for the job. Make long sweeps for sanding over the repair. Bondo should start to harden Pretty fast, usually within 5 minutes. Hardener and ambient temperature determine cure time. So be prepared to sand a bit longer if you go this route. wikiHow is where trusted research and expert knowledge come together. There was a problem completing your request. It is also paintable and takes all types of paint very well, including oil and latex-based paints for professional and home use. Your patch will be seamless, and the substrate will be as good as new. Decades of trial and error, along with a few years as a card-carrying member of the set painters union, place my experience somewhere in the middle. I found a few low spots with a contour gauge, so out came the pin welder. You'll wait up to 45 minutes for a complete cure, after which it can be painted. View technical details. In addition, we use third-party cookies to help us analyze and understand usage. Of course the cure time depends on the amount of hardener. Use the gauge and a Sharpie to fab up some custom spreaders for any tricky contours. For more tips, including how to prime and paint a car after applying Bondo, read on! Last Updated: August 27, 2019 Conversely, if theres an area you dont want Bondo to stick to, apply a release agent (see tools and materials) or use Scotch tape or wax paper. Detailed Description. Bondo 4.5 Ounce Glaze - 907. With every passing minute, the putty becomes gooey and harder to work in gaps resulting in wastage. Please try again. Bondo is sandable and can conform to any shape you desire. Mixing sticks The more modern fillers are better at not shrinking than the older stuff. If necessary, knead the tube of hardener to get uniform consistency. Clean and sand or scuff the surface to prepare it for body filler it will not adhere to smooth, dirty or oily surfaces. And as much as we appreciate Evercoat Tiger Hair for its tenacious blend of fiberglass strands and super tough resins, one can of regular weight Bondo and one can of lightweight Bondo Gold were used in this five-part journey from rust to repair. It makes sense to mix a large batch of the product that will be sufficient, right? The Bondo then dries to a very light grey color. 17 4.5 out of 5 Stars. Use it to try out great new products and services nationwide without paying full pricewine, food delivery, clothing and more. This article was co-authored by wikiHow Staff. The filler cures fast, shapes in . Work in a well ventilated space; outdoors is best. Unlike other fillers that will budge to stress and outdoor elements like wetness and UV, Bondo remains exceptionally strong. Because Bondo is a fast-drying filler. For a better experience, please enable JavaScript in your browser before proceeding. The following two factors are the primary influencers of how rapid or slow the drying rate of Bondo is. Not a bother to me And I am not experimenting with adding any fiberglass or anything(Perhaps other conversations went there). Plan ahead. 2. Bondo is designed to be used for automotive body repair applications. Disposable gloves Part #: 5801 Line: MMM. Showcasing amazing maker projects of 2022. As you increase it, so does the reaction which produces heat and gas. The natural instinct is obviously to poke it with your fingertip, but do not do that. Why? Sorry, you're using a web browser that is no longer supported. The increased gassing is what causes the holes as air tries to escape faster. Not all at once, of course. I had to mix it up a few times because it separated, but it still does the job. Bondo All-Purpose Putty & Cream Hardener, 1 Quart. The second factor that could result in Bondo deviating from the norm with regards to drying rate is the filler to hardener ratio. So before embarking on any project, continue reading this article. Mixing Bondo with the hardener is almost an art form. Cut in with heavier grit sandpaper and work out to about 80 grit to leave a tooth for the following skim coats. loyalty program . Bondos fame is attributed to the many desirable characteristics it possesses. Subscribe to the premier DIY magazine today, Community access, print, and digital Magazine, and more. Because it is specially designed to be Add. Acetone JavaScript is disabled. You can use Bondo to fill in small dings and smooth out warped panels in a car body. The Fora platform includes forum software by XenForo. Therefore, you can use heating devices or more hardener if your Bondo doesnt seem to be drying within the acceptable time frame. Shoot for that Band-Aid color to prevent a Band-Aid fix. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/3\/3f\/Apply-Bondo-Step-1.jpg\/v4-460px-Apply-Bondo-Step-1.jpg","bigUrl":"\/images\/thumb\/3\/3f\/Apply-Bondo-Step-1.jpg\/aid9491788-v4-728px-Apply-Bondo-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"

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\n<\/p><\/div>"}. When mixed, it becomes a pliable putty that is workable inside dents, gaps, cracks, dings, etc. If Bondo shrinks, it can fall off or even let moisture and air in, accelerating corrosion. By signing up you are agreeing to receive emails according to our privacy policy. The filler is always sold with a separate hardening cream. oh, so its the primer sinking. How to Troubleshoot a Broken Air Conditioner, Reduced Engine Power: What It Is and What to Do When You See the Warning Light, https://www.youtube.com/watch?v=OpE2V3oZ9Ic, https://makezine.com/projects/make-40/working-with-bondo/, http://www.secondchancegarage.com/public/242.cfm, https://multimedia.3m.com/mws/mediawebserver?mwsId=SSSSSuUn_zu8l00xM8tvN8t9nv70k17zHvu9lxtD7SSSSSS--, https://www.youtube.com/watch?v=hjvTmSAPNmE. Share a cool tool or product with the community. Just to let you know, I cut them bond spots & it seamed to change the tension of the whole dook skin. So then, how do you know it is ready? "I am repairing a boat front hull chips that are small. Sand with at least 220-grit paper between coats. Topics such as The premier publication of maker projects, skill-building tutorials, in-depth reviews, and inspirational stories, You are using an out of date browser. The PPG number you gave PX1791 is for a vinyl wash primer and more similar to S-W E2G973. I shaved the tailgate on my truck and had it perfect. 3M Bondo body filler comes in black and is packaged 12 oz per inner, 12 per case. What's the right ratio of hardener to Bondo? You should have a nice pink color, roughly the color of the plastic spreader. Think a more stable application of heat over a longer period of time. Bondo doesnt dry; it cures through a heat-generating chemical reaction between the resin and hardener. Hint: remove its lid and squeeze any air out to bring the hardener up to the tubes opening. Add 2 lines and it takes about 5 minutes to dry. Avoid endless forum threads and consult the manufacturer for the definitive answer. near you Bondo Body Filler - 593 Part # 593 Line: BDO . Or do you mean that you would do one quarter, prime just that quarter, and go onto the next spot? Yes, you can, but you shouldnt. First time out? I bonded a fiberglass scoop to a steel hood using fiberglass resin and mat at the bond area, and blended into hood with more mat and resin and thin coat of bodyfiller, and two years later when hood needed a small repair, was no cracking at the seam area, but know that bonding with two materials can cause problems at the seam cause of different contraction expansion rates. For example, how much hardener should I mix in with two ounces of Bondo? It can remain soft because there wasnt enough hardener to react with or too little such that it dries soft, not solid. With your stirring tool, transfer an appropriate-size blob of Bondo to a piece of Formica. TWO-PART FORMULA chemically bonds with surface to adhere permanently, Use with Bondo Rotted Wood restorer to fully repair rotted or soft wood, QUICK, DURABLE REPAIRS to damaged and rotted wood. Youll learn more about Bondo, what factors influence drying duration, and how to check whether it is ready. Its best not to use screwdrivers or dirty tools for mixing because they are much harder to clean and could add grease or oil into the mixture. You can turn things around to help your Bondo dry faster by introducing a heating device. Bondo Glass Reinforced Filler makes an excellent foundation for hole, dent and rust-out repairs without the need for backing strips, cloths and resins. These will be stored in your browser only with your consent and you have the option to opt-out. If you applied masking tape beforehand, let the filler sit for several minutes before gently removing the tape. 1967 SS396, Chevy Punch February 2007 Cover Car, finished, and returned to the same spot, spring of 2006, http://s969.photobucket.com/user/sevt_chevelle/library/?sort=6&page=1.