What's the difference between Koolaburra by UGG and UGG? That moisture can eventually reach the metal under it, causing corrosion. good luck How long does Bondo take to dry without hardener? Avoid endless forum threads and consult the manufacturer for the definitive answer. A forum community dedicated to hot rod owners and enthusiasts. Make sure to sand outside of the repair area as Bondo will need to be spread and applied wider than the damaged area. What will Bondo stick to? Rough-sanded bare metal is best, but primed metal will do. :thumbup: With the way the weather is everywhere, and the fact that most people don't get to finish a job (including top coating) when they apply filler, the added protection from moisture makes the epoxy a perfect choice. If rust has thinned or eaten through the panel, then the Bondo needs a backup. Either way, the metal needs to be clean and I like to use some form of metal prep type conditioner. Thanks all I'm restoring a 52 Chevy half ton. The steel will … They recommend filler on bare metal. JavaScript is disabled. Any thoughts?? :thumbup: ''life is only a temporary assignment '' Make the best of it !!! This is a common question I have been asked many times. The tempature is changing and I may have to use the 2k on the bare metal in those small areas. is their a chance of moisture getting behind the bondo and rusting out in a few years? One more thing, people that say you must filler over epoxy, do you have to respray epoxy after you sand you first application of filler? As far as the bare metal you show on the doors, we would apply right over the plastic (bondo) that is on there now without any worries. I would not put bondo on bare metal...bondo is not waterproof, rust can regain a footing under the bondo, especially in high hunidity areas of the country. Do not slap Bondo onto a smooth painted surface, it is not going to stick very well. It is suitable for a range of repairs to metal surfaces that don't require painting. I was taught that body filler must be applied to bare metal. I've done it both ways and had good long lasting results both ways. I do sand the metal immediately before the plastic goes on. 3M Bondo 261 Lightweight Filler. The reason I posted that was because he had another thread going on if he needed to apply epoxy to bare metal. That's what I use at home when I use any at all. What is the best auto body filler to use? Bondo is resistant to fuel, but only after it is cured. Recommendations If your metal surface is mostly smooth, you don’t have areas with rust problems and you don’t plan on having to use additional filler or bondo, then self-etch is a great option. We use a plant mister bottle, and if the Ospho brand, we do not dilute it. If I can I'll use the epoxy but I will either way need to apply more bondo and hope to use the dolphin tomorrow. Over time, rust can eat through the metallic surface of any vehicle. Our Bondo® Metal Reinforced Filler (PDF, 153.25 Kb) is fully sandable and accepts standard primers and auto paints. Bondo was put on bare metal for ever................With the popularity of epoxy primer, putting the epoxy then the bondo has become the way to go it seems. From a materials cost perspective it seems best way to go is bondo bare metal, then prime over it. Click to see full answer Beside this, do you put Bondo on bare metal? Epoxy primer actually seals out the oxygen from the metal, leaving no chance of rust or corrosion forming on the surface like some cheap spray bomb type primers. Can you apply body filler over sanded paint? Subsequently, question is, what Primer Do you use on bare metal? It is translucent and mostly used for bare metal only (not over filler/Bondo) and is usually primed and painted very soon after it is applied (wet on wet). Whether you’re a “die hard must be to the metal fanatic” or you’re quick to “apply bondo over anything kind of a guy”, you may want to read this or watch the video before your next body filler job. What is Bare Metal Recovery Windows server backup? http://www.hotrodders.com/forum/filler-over-epoxy-epoxy-over-filler-here-some-good-info-74668.html, http://www.a2zautoforums.com/showthread.php?t=936&page=1&pp=20, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Bondo over bare metal 1st. But I am with you on this as I have been doing my own body and paint for 34 years and have friends who do it professionally for as long or longer and it is a case of extra protection and down here so close to the gulf we need all the help we can get. i also warm the area were im applying bondo with a hair dryer first to make sure there is no moisture. I did a test a couple of years ago on the filler over epoxy. (36-grit to 220-grit should do … It is essentially rust-free. i was thinkin just bare metal, bondo then useing some rattle can duplicolor primer over the bondo for the time being, untill i finish the body work. Kevin Tetz shows you the basic steps to take your project vehicle from bare metal to clear coat using an old VW trunk lid as a prop. For a better experience, please enable JavaScript in your browser before proceeding. Normally you will use 36 grit to remove paint down to bare metal and to do some rough shaping of your autobody filler. when the metal was slightly flexed it wouldn't pop off... problem was with any pin hole or flange or any access to the bondo to moisture and the bondo absorbed the moisture and the metal would rot, paint bubble, etc. Most all of the professional shops around here use Evercoat products. Over Bare, Clean Metal – Epoxy primers are amazing at sealing up bare metal and from allowing moisture or corrosion to creep in. How big of a dent can you fill with Bondo? You can use Bondo to fill in small dings and smooth out warped panels in a car body. See More Reviews. I use Marson at work... it's ok. We try not tyo let it get over 1/8 inch, in some cases thicker, but the thinner the better. You can, however, use glazing putty on top of primer sanded with 80-grit. Spray in short smooth strokes from side to side across the metal, holding the can about 10 inches from the surface. The fiberglass resin is a thick substance that needs a catalyst to harden. We use 36 grit grinding disks to clean and texture the metal before applying filler. You CAN apply over sanded 2k primer, or bare metal. Rough-sanded bare metal is best, but primed metal will do. People also ask, can you Bondo aluminum hood? Bondo® Metal Reinforced Filler is easy to use, yet exceptionally strong for repairing and rebuilding metal, fiberglass and more. I am totally confused why anyone would come here asking for advise just to go another route anyway. If rust has thinned or eaten through the panel, then the Bondo … One school of thought suggests bare metal, then Bondo. What is the difference between ethical principles and ethical standards? Once you have a rough shape you can jump up to 80 grit for leveling the bondo and then 120 or 180 just before you put on primer. Primer before filler is the only way to go. Evercoat 112 Rage Gold Premium Car Body Filler. Usually, I prefer to seal the whole panel in epoxy primer, so that its essentially waterproof and put my filler ontop of that, followed by another application of primer or primer/surfacer (a thicker primer used to fill imperfections) It depends on the primer. An example of the application order on bare metal is: 1) bodywork including filler/bondo 2) paint prep solvent 3) self-etch primer 4) high-build primer 5) basecoat 6) clearcoat. They may be higher in price, but realistically, how many gallons will you need for one project? Most times straight to metal is dependable. We wipe and dry off right away with paper towels. I guess either way works. How long should Bondo cure before sanding? old school method was to use 36 grit crosshatch pattern to bare metal for lots of "tooth", a very rough surface. You can, however, use glazing putty on top of primer sanded with 80-grit. After all of the bodywork is done, I metal prep the bare spots 30-60 minutes before paint. Wooden fence posts take abuse from rain, snow, hail and the sun. No priming or etching is needed as long as the metal is textured and not rusted. The other says primer, then Bondo. How long can you wait to plant bare root trees? Do not slap Bondo onto a smooth painted surface, it is not going to stick very well. Evercoat fillers are designed to work over bare, properly prepared substrates such as: steel, aluminum, galvanized metal, fiberglass, and SMC. I have put my bondo on bare metal for 40 years with no rusting. Sure you can. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! How many coats of primer do you need on bare metal? Adtkart AS everybody argues both ways it is true if metal is preped properly you can put filler on bare metal with good results. The paint should be sanded off, to the bare metal, and then apply the filler. Asked By: Mitsue Stanke | Last Updated: 31st May, 2020, Generally, in a matter if a few minutes it, Before applying, paint needs to be sanded to the bare. Copyright 2020 FindAnyAnswer All rights reserved. Bondo is a brand of body filler, but it's also the generic term for plastic filler that, when uttered, makes many car guys cringe. Metalprep is about $20 a can. "Bondo" can be used over bare metal. Some places on your vehicle's surface that are rusted completely through the surface wi… I could not remove the filler without destroying the metal it was applied to, after some time (a couple of weeks)for the epoxy to cure. Car bodies are very rigid structures that don’t have much, ... You will find paint peeling down to bare … 3M Dynatron 492 DynaLite Lightweight Body Filler. See More Reviews. Permatex 25909 Liquid Metal Filler. Hope this helps! Bondo is a great product for patching damage to cars, but somewhere, ... auto body filler is meant to behave much the same way as the metal chassis it is used to repair. bondo will work fine, I used bondy on my aluminum hood. I metalprep it, then resand before bondo. I will smooth it out more with the 180, clean it, and spray it again. Bondo is body filler used in dent repair. Bondo should NEVER be on top of anything but 32-grit prepped bare metal, if you want it to stick and last. Hotrodding is much more than just owning a hotrod...It is a state of mind! Because I'm sure there will be some bare metal showing after the first blocking. Bondo should NEVER be on top of anything but 32-grit prepped bare metal, if you want it to stick and last. The bondo is grey and the hardener is a dark blue. Before applying, paint needs to be sanded to the bare metal. Eventually, it will require rust repair to remove the rust. Then I went to the paint store and the gal behind the counter told me to use high build primer next. ADTAKART what makes you think he is going another route? RE: bondo Most often over bare metal however I do know alot of body men who seal the bare metal first with a sealer like PPG DP 40 before applying bondo. On anything I do at home, it is bare metal with epoxy, then filler, and yes, I do seal with epoxy before top coating. The resin's in the body fillers create rust, and if it is put on bare metal it will etch the metal and begin rusting. all my patches i did required minmal bondo as my welds did all the work. An example of the application order on bare metal is: 1) bodywork including filler/bondo 2) paint prep solvent 3) self-etch primer 4) high-build primer 5) basecoat 6) clearcoat. On a steel car, I do not think it matters if good prep is done, but on aluminum (such as aircraft skins) I etch, alodine, then epoxy prime, then skuff, then bondo … Here are the steps required to use Bondo, a repair putty, for rust repair. About a year and a half ago there was a long thread on that subject. A rust converter should be used to prepare rust-pitted surfaces for body filler. The bare metal should be somewhat rough (180 grit) to give the filler plenty of surface to adhere to :thumbsup:. Whether you’re a “die hard must be to the metal fanatic” or you’re quick to “apply bondo over anything kind of a guy”, you may want to read this or watch the video before your next body filler job. sand area w/ 80 grit, bondo up. I won't reinvent the wheel here. Removing the old bondo from the current pannels i'm seeing rust pinholes forming, which tipped me off to ask this question. The temp changes and humidity will increase the chances of moisture getting into the filler. I have removed the thousand coats of old paint and the cab is now down to bare metal. then sanding and using better primer from a gun over the whole truck before i paint. From that point bondo doesnt stick to rust. If you put your bondo on bare metal or epoxy,,leave it. I will just say this. wen i sand bondo i reapply epoxy to any bare metal that i break through. Fiberglass is a very durable material that will bond to almost any surface, including plastic, metal, wood and Styrofoam. Will bare root hollyhocks bloom the first year? A scratch on the surface that most would think is minor, since it doesn't go thru to the primer or bare metal can be stopped by the epoxy layers. Rust converter stops the oxidation process that creates rust and prevents the rust from spreading. A rust converter should be used to prepare rust-pitted surfaces for body filler. Paint companys recommened filler over epoxy because they want you to buy more epoxy. The paint should be sanded off, to the bare metal 40 years with no rusting need.. A quality filler ( Rage Gold Extreme ) over well prepared clean bare metal is best, but realistically how... Everybody argues both ways it is not going to stick and last with an scratch... What y'all think the metallic surface of any vehicle however, use glazing on. In a car body grit crosshatch pattern to bare metal, and then apply the filler primed, painted left. Will normally work OK over properly sanded ( 80-180 grit ) to give the.... 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Both better than the damaged area rough ( 180 grit ) to give the filler paint and the cursed?! N'T rust over time, rust can eat through the panel, then prime over it Beside this do. Snow, hail and the cab is now down to bare metal avoid forum. Threads and consult the manufacturer for the definitive answer then bondo thought suggests metal. Was taught that body filler it seems best way to go is bondo bare metal filler application i avoiding. If rust has thinned or eaten through the metallic surface of any.... Side across the metal needs to be clean and i like to,!