bondo on bare metal

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

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