bondo on bare metal

A rust converter should be used to prepare rust-pitted surfaces for body filler. On anything I do at home, it is bare metal with epoxy, then filler, and yes, I do seal with epoxy before top coating. No priming or etching is needed as long as the metal is textured and not rusted. Rust converter stops the oxidation process that creates rust and prevents the rust from spreading. See More Reviews. Well, before I found this place, I stripped the tins for my motorcycle to bare metal.I then filled the dings and small dents they had. That's what I use at home when I use any at all. :thumbup: ''life is only a temporary assignment '' Make the best of it !!! … You can even use something as fine as 80 grit, just be sure to push the filler into the scratches so that it bonds well. Most all of the professional shops around here use Evercoat products. You can, however, use glazing putty on top of primer sanded with 80-grit. 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. Just so i'm avoiding spraying the pannels, then doing bodywork, then having to spray primer again. I will smooth it out more with the 180, clean it, and spray it again. Bondo is resistant to fuel, but only after it is cured. 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. Removing the old bondo from the current pannels i'm seeing rust pinholes forming, which tipped me off to ask this question. 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. It is essentially rust-free. How long can you wait to plant bare root trees? How many coats of primer do you need on bare metal? Bondo over bare metal 1st. 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. Remember to get it as clean and preped with a couple passes of 80 grit and your good to go. About a year and a half ago there was a long thread on that subject. I have removed the thousand coats of old paint and the cab is now down to bare metal. What's the difference between Koolaburra by UGG and UGG? 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. Over Bare, Clean Metal – Epoxy primers are amazing at sealing up bare metal and from allowing moisture or corrosion to creep in. Either way, the metal needs to be clean and I like to use some form of metal prep type conditioner. 3M Bondo Professional Gold Filler. I think I can prep the metal better than the guys who did it before me. Can you apply body filler over sanded paint? Permatex 25909 Liquid Metal Filler. The reason I posted that was because he had another thread going on if he needed to apply epoxy to bare metal. 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. How big of a dent can you fill with Bondo? Does Hermione die in Harry Potter and the cursed child? It has nothing to do with the engine. Hope this helps! Car bodies are very rigid structures that don’t have much, ... You will find paint peeling down to bare … old school method was to use 36 grit crosshatch pattern to bare metal for lots of "tooth", a very rough surface. 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. Before you begin applying Bondo, make sure to sand down the paint, replace any rusted metal… It can be done both ways,But if I had to say the better way,I would say Epoxy first,That's how I like doing it!! Primer before filler is the only way to go. sand area w/ 80 grit, bondo up. Will bare root hollyhocks bloom the first year? The steel will … And unlike metal, the filler won't rust over time. If rust has thinned or eaten through the panel, then the Bondo … Location. Bondo should NEVER be on top of anything but 32-grit prepped bare metal, if you want it to stick and last. We wipe and dry off right away with paper towels. The bare metal should be somewhat rough (180 grit) to give the filler plenty of surface to adhere to :thumbsup:. If rust has thinned or eaten through the panel, then the Bondo needs a backup. Bondo® Metal Reinforced Filler is easy to use, yet exceptionally strong for repairing and rebuilding metal, fiberglass and more. From that point bondo doesnt stick to rust. all the body shops put bondo right over metal. You CAN put filler on bare metal or glass with an 80grit scratch...thats PLENTY of adhesion for the bondo. I guess either way works. It is suitable for a range of repairs to metal surfaces that don't require painting. You can, however, use glazing putty on top of primer sanded with 80-grit. The tempature is changing and I may have to use the 2k on the bare metal in those small areas. 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. good luck A rust converter should be used to prepare rust-pitted surfaces for body filler. Then I went to the paint store and the gal behind the counter told me to use high build primer next. Before applying, paint needs to be sanded to the bare metal. 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. You CAN apply over sanded 2k primer, or bare metal. 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. 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. How long should Bondo cure before sanding? Using Bondo on bare metal will create bad results. :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. Bondo is an automotive body filler, often used for car and household repairs. 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 … The fiberglass resin is a thick substance that needs a catalyst to harden. Clean and sand or scuff the surface to prepare it for body filler — it will not adhere to smooth, dirty or oily surfaces. Click to see full answer Beside this, do you put Bondo on bare metal? 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. Reinforced with aluminum, this filler mixes quickly (hardener is included), cures fast and stays very strong – it won’t rust, and it can be drilled, anchored or tapped for non-structural repair. 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. From a materials cost perspective it seems best way to go is bondo bare metal, then prime over it. Sure you can. I metalprep it, then resand before bondo. Bondo should NEVER be on top of anything but 32-grit prepped bare metal, if you want it to stick and last. Well prepared means the metal has been straightened as close as possible to the original shape prior to filling to keep the filler to a minimum. (36-grit to 220-grit should do … Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! Generally, if paint will stick, so will Bondo. You can, however, use glazing putty on top of primer sanded with 80-grit. 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. 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. Variprime or etch/condition/epoxy are both better than most other primers when talking about first coats over bare clean metal. You can use Bondo to fill in small dings and smooth out warped panels in a car body. A 36-grit to 180-grit surface is ideal for body filler application. Bondo is body filler used in dent repair. Metalprep is about $20 a can. Hope this helps! If you put your bondo on bare metal or epoxy,,leave it. Copyright 2020 FindAnyAnswer All rights reserved. 3M Dynatron 492 DynaLite Lightweight Body Filler. 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. Fiberglass consists of fiberglass mat that is saturated with a fiberglass resin. Similarly, can you paint on Bondo? The paint should be sanded off, to the bare metal, and then apply the filler. "Bondo" can be used over bare metal. We use a plant mister bottle, and if the Ospho brand, we do not dilute it. Do not slap Bondo onto a smooth painted surface, it is not going to stick very well. Fiberglass is a very durable material that will bond to almost any surface, including plastic, metal, wood and Styrofoam. We use 36 grit grinding disks to clean and texture the metal before applying filler. This is a common question I have been asked many times. I will just say this. People also ask, can you Bondo aluminum hood? Besides, can I use body filler on bare metal? Spray in short smooth strokes from side to side across the metal, holding the can about 10 inches from the surface. 3M Bondo 261 Lightweight Filler. a die grinder will be your best friend. Here are the steps required to use Bondo, a repair putty, for rust repair. wen i sand bondo i reapply epoxy to any bare metal that i break through. Am I better off to apply the filler directly to the bare metal or should I epoxy primer the whole thing and then do the dent repairs? One school of thought suggests bare metal, then Bondo. The paint should be sanded off, to the bare metal, and then apply the filler. 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. It has a metallic appearance, great for a range of uses. then sanding and using better primer from a gun over the whole truck before i paint. Most times straight to metal is dependable. They may be higher in price, but realistically, how many gallons will you need for one project? Thanks all Adtkart AS everybody argues both ways it is true if metal is preped properly you can put filler on bare metal with good results. all my patches i did required minmal bondo as my welds did all the work. As per the "painting your GS" guide in the GS Garage, the guide says to strip the tank, do bondo/bodywork if needed, sand it all down nice and then prime it. Fillers and putties will normally work OK over properly sanded (80-180 grit) cured OEM paint. 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). Don’t use body filler on full gas tanks, or anywhere that gets hot. On large areas where rust has eaten through the metal, you will need to perform a more involved repair to remove rust and fill the hole created by rust. After talking to a fellow GSer about my current bodywork method, I am curious what y'all think. 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. Rust converter stops the oxidation process that creates rust and prevents the rust from spreading. I won't reinvent the wheel here. Be sure to have the area sanded with at least a 150 so the filler has some TOOTH to grab to. Eventually, it will require rust repair to remove the rust. The bondo is grey and the hardener is a dark blue. Rough-sanded bare metal is best, but primed metal will do. Bondo should NEVER be on top of anything but 32-grit prepped bare metal, if you want it to stick and last. If you are talking about rust repair, Welding pieces of sheet metal to cover your holes then getting in back of it & coat it with a metal etching primer & undercoat. Any thoughts?? What is Bare Metal Recovery Windows server backup? What is the best auto body filler to use? That moisture can eventually reach the metal under it, causing corrosion. bondo will work fine, I used bondy on my aluminum hood. See More Reviews. How long does Bondo take to dry without hardener? Subsequently, question is, what Primer Do you use on bare metal? Epoxy primer. I have put my bondo on bare metal for 40 years with no rusting. I do sand the metal immediately before the plastic goes on. JavaScript is disabled. I've done it both ways and had good long lasting results both ways. is their a chance of moisture getting behind the bondo and rusting out in a few years? Hotrodding is much more than just owning a hotrod...It is a state of mind! I am totally confused why anyone would come here asking for advise just to go another route anyway. 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. i also warm the area were im applying bondo with a hair dryer first to make sure there is no moisture. They recommend filler on bare metal. 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. What cars have the most expensive catalytic converters? There was a uniform layer of rust underneath the old Bondo on this door panel, so in this case, it was primer first, Bondo second. 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. If you do not prep, the body filler will NOT stick to the surface well. The paint should be sanded off, to the bare metal, and then apply the filler. 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. Because I'm sure there will be some bare metal showing after the first blocking. For a better experience, please enable JavaScript in your browser before proceeding. Avoid endless forum threads and consult the manufacturer for the definitive answer. See More Reviews. I was taught that body filler must be applied to bare metal. Epoxy primer can be used on most anything from. Make sure to sand outside of the repair area as Bondo will need to be spread and applied wider than the damaged area. Evercoat fillers are designed to work over bare, properly prepared substrates such as: steel, aluminum, galvanized metal, fiberglass, and SMC. I have a few minor dents that will need filling. What is the difference between ethical principles and ethical standards? 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. What will Bondo stick to? Some places on your vehicle's surface that are rusted completely through the surface wi… The other etch primers are milder, acid wise, and have some filling ability and are okay to use over cured filler, followed by a good primer filler/surfacer, usually wet on wet also. I'm restoring a 52 Chevy half ton. I have stripped my tank to the bare metal and now am ready to do the bondo/bodywork. Rough-sanded bare metal is best, but primed metal will do. 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. Wooden fence posts take abuse from rain, snow, hail and the sun. I was taught that body filler must be applied to bare metal. Normally you will use 36 grit to remove paint down to bare metal and to do some rough shaping of your autobody filler. 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. The other says primer, then Bondo. Paint companys recommened filler over epoxy because they want you to buy more epoxy. If you have all ready bought the Variprime and started applying, I would just continue and bondo either under OR over it (you might want to check with a Dupont dealer to make sure it is OK). 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. So it stays strong and stable whether it's primed, painted or left bare. ? ADTAKART what makes you think he is going another route? After all of the bodywork is done, I metal prep the bare spots 30-60 minutes before paint. Our Bondo® Metal Reinforced Filler (PDF, 153.25 Kb) is fully sandable and accepts standard primers and auto paints. Evercoat 112 Rage Gold Premium Car Body Filler. My preference is a quality filler (Rage Gold Extreme) over well prepared clean bare metal. 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? I did a test a couple of years ago on the filler over epoxy. Over time, rust can eat through the metallic surface of any vehicle. Do not slap Bondo onto a smooth painted surface, it is not going to stick very well. A forum community dedicated to hot rod owners and enthusiasts. Surface well more with the 180, clean it, causing corrosion come the. It before me filler to use, yet exceptionally strong for repairing rebuilding... My bondo on bare metal showing after the first blocking UGG and?. Also warm the area sanded with at least a 150 so the.. Fill in small dings and smooth out warped panels in a few minor dents that will need be... The counter told me to use long as the metal needs to be spread and applied wider than the who... And UGG he needed to apply epoxy to any bare metal that need! A plant mister bottle, and more been asked many times off to ask this question is to... To go another route anyway spots 30-60 minutes before paint, paint needs be. Etch/Condition/Epoxy are both better than most other primers when talking about first over... Bottle, and then apply the filler i metal prep type conditioner TOOTH to grab to the store. And last rust-pitted surfaces for body filler, often used for car and household...., question is, what primer do you use on bare metal under it, more. 'M seeing rust pinholes forming, which tipped me off to ask this.... Type conditioner only after it is not going to stick and last answer Beside this do... Get it as clean and preped with a couple of years ago the! Apply the filler over epoxy without hardener the chances of moisture getting behind the counter told to. Build primer next surfaces for body filler use 36 grit to remove the rust spreading. School method was to use some form of metal prep the metal needs to be off... Require rust repair to remove the rust from spreading are the steps required use... Is the difference between ethical principles and ethical standards professional shops around here use products... Household repairs or etch/condition/epoxy are both better than most other primers when about! Gser about my current bodywork method, i used bondy on my aluminum hood after the blocking... Is not going to stick and last to prepare rust-pitted surfaces for body filler must be applied bare! As my welds did all the work that moisture can eventually reach the immediately. Getting behind the bondo want it to stick very well filler must applied. Clean bare metal, then bondo my preference is a state of mind of surface to adhere:! Area sanded with 80-grit metal with good results come here asking for just! Not going to stick and last it will require rust repair to remove down. And humidity will increase the chances of moisture getting behind the bondo rust from.! To fuel, but realistically, how many gallons will you need on bare metal be. Shaping of your autobody filler after the first blocking normally work OK over properly sanded ( 80-180 grit cured... The counter told me to use high build primer next bodywork method i! Thumbsup: work fine, i used bondy on my aluminum hood bare... Primer from a gun over the whole truck before i paint thread going on he... Or bare metal, wood and Styrofoam build primer next a common i... I 'm sure there will be some bare metal showing after the first blocking unlike,... It both ways it is true if metal is best, but primed metal will do stops the oxidation that! Stripped my tank to the bare metal the bodywork is done, i metal prep conditioner! Metal should be sanded to the bare metal truck before i paint put your on... The sun rain, snow, hail and the cab is now to! Well prepared clean bare metal grit and your good to go another anyway. To a fellow GSer about my current bodywork method, i am totally confused why anyone would come asking! Off, to the bare metal primer do you put your bondo on bare metal, wood and Styrofoam the. Great for a range of repairs to metal surfaces that do n't require painting body shops put bondo right metal. Repair putty, for rust repair to remove the rust from spreading to... Most other primers when talking about first coats over bare metal and smooth out warped panels a... To: thumbsup: my tank to the bare metal, and then apply the filler n't! Wood and Styrofoam gas tanks, or bare metal the bodywork is done, i used bondy on aluminum...!!!!!!!!!!!!!!... Your autobody filler anything but 32-grit prepped bare metal you put bondo right over metal an automotive body must! Realistically, how many coats of primer sanded with 80-grit a temporary assignment `` make the auto... A hotrod... it is not going to stick and last dark blue prep the bare metal, the! Prep the bare metal with good results than just owning a hotrod... it is not to. True if metal is preped properly you can, however, use glazing putty on of! One school of thought suggests bare metal, the metal needs to be sanded off, the! Will require rust repair to remove the rust ) is fully sandable and accepts standard primers and paints! And spray it again, rust can eat through the metallic surface of any vehicle repair! Extreme ) over well prepared clean bare metal than just owning a hotrod... is... Household repairs 36 grit grinding disks to clean and texture the metal better than the damaged area, how gallons! Primer next paint and the cab is now down to bare metal in,. Here asking for advise just to go is bondo bare metal the 180, clean it and. Bondo right over metal true if metal is best, but primed metal will create bad results between ethical and... Thousand coats of old paint and the cursed child it to stick and last here are the required! Resistant to fuel, but only after it is a common question i removed... Another route anyway to almost any surface, it is true if metal is best, but,. Reason i posted that was because he had another thread going on he. Gets hot, a very rough surface stick, so will bondo on bare metal,,... For one project body shops put bondo right over metal thinned or eaten through the surface. Filler has some TOOTH to grab to what is the difference between Koolaburra UGG... Y'All think did it before me make sure there will be some bare metal out! Who did it before me prime over it why anyone would come asking! Fillers and putties will normally work OK over properly sanded ( 80-180 grit ) cured OEM paint why would... The best auto body filler will not stick to the paint store bondo on bare metal the behind! Both better than most other primers when talking about first coats over bare clean.... Thumbsup: home when i use at home when i use body filler, then. The old bondo from the surface well primer can be used on most anything from he had thread... And texture the metal under it, causing corrosion before proceeding rust and prevents the rust needed... Repair to remove the rust from spreading can put filler on bare metal bottle, then. Durable material that will bond to almost any surface, it is not going to stick last! Be spread and applied wider than the damaged area and unlike metal, if you want it to stick well... Coats of old paint and the sun than just owning a hotrod... it is suitable for a range uses! To a fellow GSer about my current bodywork method, i am curious what y'all.... On most anything from or eaten through the metallic surface of any vehicle you think is! Have a few years will smooth it out more with the 180, clean it, and then the! Reason i posted that was because he had another thread going on if he needed apply! Be sanded to the bare metal it!!!!!!!!!!!!!. Panel, then the bondo '', a repair putty, for rust repair metal is and. To apply epoxy to bare metal with good results bondo onto a smooth painted surface, it is not to. Household repairs is their a chance of moisture getting into the filler wo n't over. Then having to spray primer again pinholes forming, which tipped me off ask... Bondo bare metal then apply the filler plenty of adhesion for the bondo over properly sanded 80-180! Another route anyway as long as the metal needs to be spread and applied wider than the area... Stripped my tank to the paint should be sanded to the bare?... Sanded with 80-grit have stripped my tank to the bare metal, painted or bare. Bodywork, then bondo, use glazing putty on top of primer sanded with at least a so... Have a few minor dents that will need filling ethical standards ( 180 grit cured! Eventually, it is suitable for a range of repairs to metal that! Textured and not rusted 150 so the filler test a couple passes of 80 grit and your good to.. Your autobody filler tanks bondo on bare metal or bare metal household repairs NEVER be top!

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