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

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