Any small imperfections will usually come out and if not shoot some more 2k primer and repeat the guide coat block sanding. There isn't an epoxy-based body filler anyway, it's all a polyester or vinylester base. Not a thick heavy coat but a light to medium wet coat. Usually a good 2k primer surfacer is sprayed on top of the filler and then blocked. Many discussions arise around whether or not to put filler over epoxy. My first order of business included ordering some supplies including body filler, high-build primer, a variety of sanding blocks, and several rolls of peel and stick sandpaper in a 150, 180 and 220 grits (finer sandpaper will need to be purchased for the final body work later). You should be able to sand a small area by hand, remember to switch the kind of sandpaper to get a smoother finish when you're done. From there the build primer gets guide coated and block sanded to remove the guide coat. In most cases, the filler primer or high-build primer is also a urethane product. Your welded seam should be sandblasted and primed immediately. One antique tractor restorer fittingly referred to filler primer paint as little more than liquid body filler. If you fill over epoxy it is like all other primers. 2) Some of the panels need more significant metal work. Usually it is … If I had a car completely stripped down to metal or blasted, I would probably go ahead and shoot epoxy over the car to prevent the metal … I do my filler work over the epoxy and then seal with more epoxy before going to the build primer. Automotive plastic body filler, often times called "Bondo," is used quite frequently for automotive repairs and restorations. Part 1 of 3. Although applying and working body filler is relatively straightforward, there are a number rules that need to be adhered to for you to achieve a high-quality finish that will stand the test of time. And that’s not far from the truth. Once the materials arrived it was time to get to work. When you’ve done everything you can to fill rust pits and strip old paint from sheet metal, one of the best ways to cover any remaining imperfections is to use a filler primer, as known as heavy-bodied primer or high-build primer. We use 36 grit grinding … Kevin shows you the proper way to mix, apply and sand body filler using the Eastwood Contour line of body filler products. Bondo® Easy Finish® Gray Filler Primer is a lacquer-based, fast-drying, easy sanding filler primer designed to fill surface scratches and create a uniform surface for painting. With the common use of epoxy primers which is waterproof it makes more sense to prime first then apply filler over the top where the body filler, which may attract water, is not touching the metal. The … I have been doing this for many years with no adverse results. February 23, 2010 at 2:32 pm #32142. Let it dry completely. I think you can IF you primer over the ospho first with a non-epoxy primer. After final blocking then a seal coat of epoxy is sprayed before color is sprayed. How To Use Body Filler. Body Filler Over Epoxy Primer Posted: February 23, 2010 By: JOE S Home › Forums › Kevin Tetz’s Korner › Body Filler Over Epoxy Primer. The Halfords Filler Primer 500ml is essential to obtain the optimum adhesion and performance of the finishing paint. Then simply respray the areas you worked on to re-seal them. Yes you can, but if the damage is minor, I think you would have better luck with a 2 part glazing putty, like Icing. When used properly, bondo- or body filler- is a perfect material for repairing dents, scratches, and other bits of damage to a vehicle quickly and seamlessly. This topic has 0 replies, 1 voice, and was last updated 10 years, 11 months ago by JOE S. Viewing 1 post (of 1 total) Author. Now, body filler is considered a superior option for fixin Polyester Primer Surfacer Excellent build when you can’t … Can i use body filler over primer? And that was with mid-grade materials. There will be parts where the primer is sanded completely off and some new pieces of metal welded in. So, epoxy primer first, primer surfacer over that. It is a very fine grained filler that comes in a tube, similar to tooth paste. Then I'll spray the whole panel with epoxy. An etching primer uses an acid to chemically clean and micro-etch the metal surface for a better mechanical bite to promote adhesion with the layer of high-build primer to follow while also providing a layer of corrosion resistance on the metal. remember paint and body technology stuff changes, usually for the better, if the new products say to use epoxy under them, then I would do it, just be glad we have such good products today over what used to be available, this is one area where traditional isn't always better, I remember "traditional" filler and how bad some of it was compared to new products, … Halfords Filler Primer Extra Info. Applying Body Filler. Evercoat’s Quantum1, Rage Ultra, and Rage Optix are all recommended with no primer. Posts. As long as you let the primer fully cure and then scuff the surface it will be fine. No need to use galvy primer at this point. Many bodymen of the time were not sold on the idea of using plastic body fillers, but over time, it became … Good news: it it provides an extremely smooth surface, filling in any scratches/small imperfections in the Bondo. Filler is also designed to be applied direct to metal and so is epoxy primer. However, if you do a lot of restoration work, this may work great. PPG TrueFinish delivers high-quality liquid and powder … Since urethane is only a primer-surfacer, you’ll also need to apply a sealer of … You’re switching from a darker to a lighter paint color. If you're performing any type of bodywork, repairs, or paint updates, you'll need to use primer at some point. Two part urethane primer surfacers, or primer filler, as they are sometimes called fills and sands better than epoxy but does not have as good of corrosion resistance/adhesion to bare metals as epoxy therefore they are often used over epoxy primer and/or putty and filler materials to provide the best performance as a system. Before adding any filler, you should get the metal fairly close. Or do I need to re-spray it with epoxy? It also can serve as a filler for sanding/grinding marks and small scratches on your car body, negating the need for putty or a more prolonged repair job, like a urethane surfacer. i noticed some low spots on a hood i was sanding and i was wondering if body filler would stick on top of primer? Once the epoxy primer is down you no longer have to worry about rust while doing your repairs – especially since you can apply body filler right on top of it. But a key difference with etch primer is that you need to apply your filler … Once the surface is even you can use a coat of primer over the filler … Bad News: it take awhile (overnight) to set up before it can be sanded smooth with very fine sandpaper (220 or higher). I'll do the metal work with the old primer on it. The only primer that body filler is recommended to be applied over is epoxy primer. The reasoning behind it is that the filler/epoxy/metal bond is stronger and more flexible (epoxy has more flex than filler…) than the filler direct to metal… Some metal preps leave a chemical coating, some just clean the metal totally free of rust. I normally do not use this method. I believe this is why they are compatible. Remember, let the primer surfacer dry! It just doesnt bond good enough. Step 2 - Priming. The trick is to use a steel rule to apply filler. The only time that I apply filler over (sanded) primer/paint is when using two part putty, which is designed to be applied over paint, primers, etc. If the filler is uneven, this is going to show up through the paint. This is typical of using Epoxy over body filler because epoxy does not have a lot of filling properties. Scuffy it after it dries, and then apply your coats of urethane primer. The autobody instructor at the college was the one who said to work the filler then epoxy because hes seen the filler not bond well to the surface over epoxy and pop off shortly down the road. Although it takes longer to cure than self-etch primer, restoration shops tend to favor epoxy primers because of they often handle more extensive body … Epoxy and use a glasze puddy. Don't apply too much primer surfacer too fast as thick coats trap solvent and can cause shrinkage. Self etching is good as a base. You've likely heard of Bondo before, as it's a common name (specifically from the brand 3M but widely used in reference to body filler) for the thick polyester resin that's primarily used for auto body repair. Halfords Filler Primer. With a history dating back to the 1950s, body filler revolutionized auto repairs due to its ease of use when compared to handling lead. The epoxy primer needs to "vent" solvents prior to spraying the primer surfacer. Or, use a filler that is designed to apply directly over this kind of weld. I don’t fully agree with this, yes it can be done, no I don’t think it is the best method. One Last Option – Body Filler Over Primer. Moreover, can you put body filler over etch primer? Now if its a small dent. Having spotted a friend applying filler the hard way I decided a page about this technique could be useful. You can generally add as many coats of filler primer as you want, sanding between each coat (as some restorers do) or after every three or four coats. How to Use Auto Primer. Or do I have to remove all of the etching primer and go to straight … I did my body work in bare metal and I have most of the car in etching primer. This article was first published in the July 2007 issue of Street Machine. Fillers designed to go on metal. Same reason you dont want it over paint. Like most plastic body fillers, Bondo is a lightweight polyester-based plastic body filler that was originally developed as an alternative to lead body solder. That is fine to put over primer. … 2 Use multiple coats of primer and sand with very fine … Kevin I hope you can give me a definative answer on … You’re painting over a surface that has stains or is peeling. Even on a car I ospho-d then zinc-chromate primered, the light bondo smear over those portions have never bubbled after 12 years. If so, can I thin it? Could I apply epoxy primer over the etch primer as a form of high build primer? 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