Custom Shop Premium Self Etching Acid Etch Primer, 1 Quart - Ready to Spray Paint, Excellent Adhesion to Bare Metal, Steel, Aluminum, Fiberglass - Use on Automotive Car … He explains that it is imperative the doors on a classic car are lined up before installing the fenders because that’s what the fenders are going to fit. Undercoat in a can may not be quite the overkill that you imagine. Any rust on metal parts must be removed first either by sanding, media blasting or brushing off with metal brushes. Just sanded an old exhaust bracket down to bare metal and was wondering what the best thing to use was since it will be on the bottom of the car. I only use self etch on bare metals. This helps remove sanding scratches and small surface defects. For large area coverage I generally use PPG DP 90 epoxy primer after I condition the metal using a 3M rust & paint removing disk and wash the surface with PPG Acri-Clean. Depending on the goal of your project you have a few options after the epoxy primer is sprayed. Allow the final coat of Self Etching Primer to dry for a minimum of 3-4 hours before dry sanding, or 15 minutes before wet sanding with #400 grit sandpaper. Unless you only have a few minor issues to fix, it’s challenging for us do-it-yourselfers to carve out enough time to strip the old paint to bare metal, do the repairs, apply bondo and then spray a layer of self-etching primer before surface rust begins to form on the body. Let’s start at the beginning. Etch Primer can be tricky. So it’s important that you get all of the scaly rust off. It’s also important to remember that no primer is meant to be a top coat and they lack any real UV resistance. Find Metalshield 300g Etch Primer Spray Paint Light Grey at Bunnings Warehouse. another good choice would be to spray it with a two-part epoxy primer. Thank you for your patience while I got the response from the expert, Here it is: Generally we use 320 or 400 grit to prep old paint for repaint. Allow time to dry, then paint. A site for the discussion of automobile paint and painting. It is also sold as an aerosol mixture, which can be used as simply as spray paint. Now after spending 175 on a two part metal lock, I am left with the task of stripping my whole engine compartment back down. Self-etching primer is especially effective on diecast, which ordinary paints and primers sometimes have trouble sticking to. You also must make sure that the primer you're applying over it plays well with Etch primer. 7 Inspect the piece visually and also by rubbing your hand over it, and use glazing spot putty to fill in any remaining flaws or pinholes in the primer. A note about self-etching primer and aluminum. Once the self-etching primer is dry, spray two to three coats of the high-build primer over it, always allowing each coat to dry before applying another one. Especially bare metal that has been exposed to the elements for more than a day or so. Mark Oja gives a brief demonstration on how the stretcher works and then shows you an example of a finished product. Rust-Oleum®Self Etching Primer is designed to prepare bare metal, aluminum and fiberglass surfaces to promote maximum adhesion and smoothness of the topcoat finish. Is it better to apply body filler before or after self etching primer? Etch Primer is a paint that is designed to physically bond itself to the substrate to which it is applied. Epoxy works pretty good over Acid etch as the epoxy does not tend to melt the etch like, say a 2k primer would, only issue will be is the etch is the weakest link but normally OK, if done this way. My son is building a bobber and he wants to leave it bare metal and put a clear coat over it to protect it from rust. You have sandblasted the body and I assume it's because of rust, correct? I generally plan to be ready to pick up the car from the blaster the moment it is done and am ready to throw it into primer. Allow the final coat of Self Etching Primer to dry for a minimum of 3-4 hours before dry sanding, or 15 minutes before wet sanding with #400 grit sandpaper. We would like to offer you a special promotion for your first-year membership. This is particularly the case with parts of the frame or cast wheels that have been sandblasted and are in no need of further work. Hi What’s the next step after selfech priming ? We’d love to have you be a part of our community. Putting more of the primer won’t make it work better. The only thing I can imagine is the the paint store guy misunderstood and thought you were using cheap spray can primer and wanted you to take that off. Can we go ahead and start adding are first coat or will we need som other type of regular primer ? I just went in to my local paint shop to buy some high build primer to put on the self etching primer I used in my engine compartment. Is this true, the primer is no good if used from a spray can? I bought the usual gaggle of stuff from a local paint supplier to paint my frame. Do not use near open flame. Dry time is about an hour.Jim, Hi I am messing around with a car I have as a daily driver ( a 81 caprice) its still a very nice car for its age, has rust starting. Two light to medium coats will do. https://go.ClassicCarRestorationClub.com/C15970, what grade sandpaper is needed to sand paint that’s already on the car for repainting once the sanding has been done do the car have to be primed before painting. Once the area is coated in self etching primer more traditional primers can be used to build out the surface. Will I need an etching primer for this? Unless you only have a few minor issues to fix, it’s challenging for us do-it-yourselfers to carve out enough time to strip the old paint to bare metal, do the repairs, apply bondo and then spray a layer of self-etching primer before surface rust begins to form on the body. If you do choose to use them I would next apply an epoxy primer as opposed to a self etch primer. Self-etching primer comes as two parts or ready to spray and also comes in aerosol. I think I'd go self-etching primer, then spray can enamel then undercoating in a can.The enamel, and I'd use gloss is going to give you more protection than just the undercoating.And like you said she deserves it.Jim, Does any body make a clear self-etching primer? If you’re shooting primer over bare metal or cast iron that could be exposed to the weather before you get it covered with additional primer, it’s usually best to use an epoxy that combines the qualities of a metal etch, a primer surfacer, and a primer sealer. Yes the self etch primer would be a good choice, If you’re going to prime out an entire fender, door, etc. If you wait more than 12 hours you should, like he said scuff down with a Red scotch pad and reapply, then prime. I bought 1 gallon of etching primer and a can of hardner (normal drying time). Hope this helps, Mark Classic Car Restoration Club Video Membership. I have a project where is want primer and paint inside and out on some parts I'm restoring or do you know if there is something I can use to spray paint into hollow areas of parts? Follow the manufacturer's instructions on the side of the can for best results. For instance steel screws in aluminum or on welds. Typically the next step is apply a primer surfacer, 2-3 coats then block sand with 320-grit. into google because i had seen it being sold by a couple of on-line retailers and wanted to know more about it - this really helped - thank you! Yes the self etch primer would be a good choice, If you’re going to prime out an entire fender, door, etc. Self-Etching Primer Dupli-Color® Self-Etching Primer etches and primes bare metal in one step, making it ideal to use as the first step in all automotive priming projects and for use on spot repairs. Put on your face mask and spray the entire piece with the self-etching primer. Self-etching primer is ideal for painting metal and creates the foundation needed to bond with the paint. Thank you for that - i am currently trying to put my 39 year old land rover back together and put "what is a self etching primer?" This allows for a nice flow rate that makes the sanding really smooth and gives the classic car a clean finish. I have another project of replacing the rockers on a car and I need to get paint on the inside of the panels to prevent rust.Thanks again for the info,Arden. Problem metals like aluminium copper and galvanized benefit from self etching primer. Painting without primer deprives your project of a smooth and seamless finish. Self-etching primer is a primer that can come in an array of mixtures including a compound mixture that you have to mix yourself. Without using an undercoat, the quality of your paint job suffers. This ensures good adhesion and rust prevention. Make sure to be just as careful Craig when sanding around the edges so you…, Enter in your email and password to create a FREE account, https://go.ClassicCarRestorationClub.com/C15970, Sheet Metal Shrinker/Stretcher For Your Classic Car, Customize Your Own Classic Car With Sheet Metal Fabrication, Restoring a Classic Car: Installing Fenders. (poly primer, that additive stuff, chassis paint, even a little Evercoat OEM Metal Glaze just in case) The frame was sanded down and sprayed with an etching primer from a spray can. Follow the manufacturer's instructions on the side of the can for best results. You can apply it over paint or bondo but it is only effective on bare metal. If you plan to do body work after priming, epoxy primers are a better choice. Self etching primer contains a mild acid that actually etches the bare metal to create a superior bond between the primer and the metal. .DESCRIPTION AND USES. Metals with high electromagnetic potentials (aluminium and copper)are so electrically active that they will push the paint off from the back side. I wanna do this myself cheap as possible, I have a hvlp gun and a compressor. Etch Primer can be tricky. Visit your local store for the widest range of paint & decorating products. The Self Etch Primer is a good first step for bare metal, or an Epoxy Primer. This special primer will grip to the metal and prepare you for regular primer and paint. GregI understand what you are trying to do and I've seen it done nicely a couple of times. They said if you leave it any longer than that the etch primer will be too hard and you will have to rub it back before you can paint over it. The new paint needs a little tooth to grab onto and hold it secure to the finish. I must admit it is not real pretty, but from all Ive read it is not that important that the SE primer be very thick. This is achieved by combining an acid with the paint so that the acid microscopically etches the surface of the substrate, thus forming a physical and chemical bond between the two. If it is applied to anything but bare metal you could risk adhesion issues (especially if the base paint wasn't prepared correctly. Now my uestion is it has rust starting but hasnt rusted through, now can I grind it down to bare metal por-15 the rusted areas then put bondo over that or whats the way to go? Aluminum is especially difficult to paint. The self-etching primer is usually gray or olive drab gray but the color is just there to show you where you’ve put it on and it is very thin and one thin coat is enough. I'm thinking I can use etching primer then undercoat-in-a-can on top of that? You need to use self-etching primer to paint aluminum, but prep work is especially important. Yes you can. Phosphate washes are designed to clean and etch the metal in preparation for primer. If your car is going to be outside during the restoration process you may need to re-coat some of your primed areas. Etching primer is a type of primer paint that has a high acid content that allows it to form a superior bond to bare metal. Is the self etching primer something I can spray on to protect it from rust and leave it until I’m finally ready down the road to apply the high build primer? My question: If I apply a zinc phosphate coating on my bare metal (such as After Blast by Eastwood), can I still use a self-etching primer over top of it? Just in case you do not remove rust from metal before painting, the rust will eventually remove the paint. I had no need for a gallon of DP90 + gallon of Catalyst. Customers can shop with us in-store or online with our Click & … I do not recommend using body filler with self etch primer. What is recommended to prep the frame for priming and painting. You did make it clear to him that you were using self etching spray can primer? Thanx, I have a '97 Hyundai, I think it has aluminium panels. The steel that is your car wants to turn itself back into the puffy red iron oxide that it was when it was mined. Hello Chap,Top blog with very informative information!I'm Paul from Surrey, England.I, like so many people here have a Land Rover defender 300TDI 1997 and need to understand if I can use a "Self etching primer" for both Aluminium brackets and galvanised door hinges? I use it when ever I see bare metal or if I’m putting one metal against another. I was wondering, can parts be dipped into etching primer? It’s a paint intended as an undercoat that prepares numerous surfaces for a topcoat. Hi Mark. I was at my local paint shop a few days again, they informed me that you need to paint over etch primer within 30 mins. Self etching only needs to be applied to Bare Aluminum. Will self etching primer work correctly over body filler? This comment has been removed by the author. I then use a primer sealer or epoxy primer to seal up the surface then apply the top coats. For small parts or spot repairs I often use SEM self-etch primer. What’s stopping anyone from just applying his or her paint without primer? I prefer Hammerite.Remove all loose rust, dirt, grease and salt with detergent and water then clean with a solvent and rinse with clean water. That etches into the metal and then the primer chemically bonds to it. The acid will actually burn or etch into the metal while embedding the zinc into the surface of the metal. Creative Commons Attribution-ShareAlike 2.5 License. You can apply your high build primer or body filler over the self-etching primer but be careful it is not a finished product by it self. Primer Self Etching Beige for Bare Metal Aluminium Plastic 4.8 out of 5 stars (12) Total ratings 12, £8.39 New Go to next slide - Best selling All Auction Buy it now Sort: Best Match Best Match Price + … The Self Etch Primer is a good first step for bare metal, or an Epoxy Primer. fingerprints. The control bolt will then set the height of fender to height of door…, Craig Hopkins demonstrates how to sand a car fender using a small, tight orbit DA with a cushion pad. Self-etching primer adheres to tin-plated steel really well and it dries to a somewhat rough finish that makes it easy for the top coat to grab onto. It uses a combination of acid and zinc in its formula. Allow time to dry between coats. Wipe the surface with wax and grease remover to get it clean enough so nothing interferes i.e. I have searched the forum and not found an answer, so - Can I spray an Acrylic Enamel auto paint (lower end stuff like Kirker) over the Rustoleum Automotive Self-Etching Primer that comes in rattle cans? Can you put body filler over self etching As a sparrowhawk@ihug.co.nz, Something which can cause problems is salt, Even a finger print can contain enough salt to cause tiny blisters under the film. The self-etching primer is usually gray or olive drab gray but the color is just there to show you where you’ve put it on and it is very thin and one thin coat is enough. Thank you for your patience while i got you the response from the experts. My general rule of thumb is, If the area to be primed is over a couple feet square, I prefer to mix up some epoxy primer for bare metal. 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Self-Etching primers can be used to build out the surface then apply the top coats can we go and... And prepare you for your first-year membership to seal up the surface a type of regular primer for parts. Helps remove sanding scratches and small surface defects cheap as possible, I have a '97 Hyundai I! You have sandblasted the body and I assume it 's because of,.
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