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Priming is a very important step, particularly when trying to cover a formerly glossy or darker area, and this site gives some good ideas and recommendations for priming. Phosphoric acid ester formula promotes paint adhesion to difficult substrates, like galvanized steel and aluminum. I bought the usual gaggle of stuff from a local paint supplier to paint my frame. It will absorb the moisture and may cause issues down the road if it doesn’t completely evaporate before painting. But don't paint over straight etch. Am I just lucky or is it more of an issue spraying "real" paint over it? You can prime and paint one day, then reassemble the following weekend after letting the parts sit all week. It discolored the primer, but it didn’t come off. Profile Page. 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. For aluminium and brass, use an SLS etch primer. Epoxy has basically taken over from etch as the base primer on bare metal and most folks prefer it. It’s no secret that self etching primer is one of the best options for sealing up metal and keeping a barrier between bare metal and the moisture that tries to rust the metal! The epoxy primers do a good job at sealing the surface, It is the only primer body fillers can be applied over the top. Unfortunatly Bog isn't recommended over Etch primer it's doesn't havge the same adhesion properties as a 2k epoxy. 3. Member. Wait 4-8 hours for the Bare metal primer to dry then again a light buffing with the pad and then shoot the 1st coat of color. Once applied and dried (couple of hours) Use a 3m Scotch Brite pad to knock down any nibs and then shoot the Bare metal primer over the entire Prepped (Acetone wipe down) surface. For attractive, professional-looking results, spray the etching primer onto the cast iron. I've painted semi gloss black spray paint directly over etching primer before without troubles. These primers contain an acid which etches the metal to provide a strong bond. Self etching only needs to be applied to Bare Aluminum. Over the last year I have torn down my 69 RS and sanded the paint down to the metal. The best paint to use is a water-based acrylic one. Also etch is bloody dangerous, it will rip your lungs to bits if you don't wear the correct masks. This product is the product you apply block sand, apply more til its straight. Its one soul purpose is to level out the surface thats it. After that, you need to clear coat it. Thanks for the latest replies. Self etching only needs to be applied to Bare Aluminum. A comfort spray tip with a … 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. rustynewyorker. 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. Self Etching Primer is a rust preventive coating that etches and primes in one coat. To paint over chrome plating, wash the surface, sand it, apply self-etching primer and filler, paint the chrome, and apply sealant. Oil based or shellac primers are best. An urethane primer surfacer is what is referred by "2K" primer. Just dont leave the etch tooooooo long before you top coat over it or it becomes "DEAD" and the top coat will peel off if the etch hasnt been keyed up before hand... ALL 2 PACK PAINTS need … Sign up now to receive exclusive email deals, industry news, and new product releases.*. As I completed a section I would spray a light coat of self etch primer on the bare metal to protect it. Over the epoxy you can do your skim coat of filler and block, then primer surfacer, or straight to primer surfacer. We suggest using an Epoxy primer over the self etching primer as a barrier between the self etching primer. Can you paint directly over etch primer? Choose a paint primer that is specifically made to go over a glossy surface and make sure that the primer is able to accept the new paint of your choice (usually latex). Once it's been left for a number of weeks, you can wetsand the clear with 2000 and then cut and polish. Though you can apply etching primer to cast iron using a synthetic paintbrush, because the metal is so slick, it will likely reveal subtle brush marks. (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. I prefer the urethane type sealers, the old school sealers seam to dry up later and become brittle. Self-etching primers have to have another primer ove… I had no need for a gallon of DP90 + gallon of Catalyst. Just make sure you shoot the first coat of epoxy with NO reducer, just 1:1 with activator. gotwood, Sep 11, 2008. Red oxide primer is a specially formulated coating used as a base coat for ferrous metals. But don't paint on the straight etch. If you’re using an oil-based paint only use an oil-based primer, not an acrylic one. After that, you need to clear coat it. Edited by 106 gti on Sunday 7th October 15:34. Painting With Red Oxide Primer. Then you can spray the acrylic metallic base. You can't paint directly over etch primer.You need a surfacer or other primer/sealer over it. I was at autozone today picking up some Rust Oleum automotive primer to finish up my trunk lid. All rights reserved. To get the primer to stick over paint could take up to four or five layers before being able to fully stick and cover up the under paint. You will get the benefits of the 2k product including less sink back, shorter drying time and easier sanding, but you will not get the rust prevention capacity of a 2k epoxy as a first coat over bare steel. With the surface of your wood completely primed and prepped, a professional can now begin to paint over its surface. Find all of our automotive grade primers HERE. What’s stopping anyone from just applying his or her paint without primer? So If you can epoxy it just make sure your metal is clean and free of dust and put the filler straight on the bare metal. But a key difference with etch primer is that you need to apply your filler or bondo first directly to the metal before spraying it. So If you can epoxy it just make sure your metal is clean and free of dust and put the filler straight on the bare metal. Yes you need to put finish paint over over the primer as primer is not designed to be left with nothing over it. 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. For wrought iron or steel in severe conditions you can use a primer. its one of those things where you can, but you shouldn't. Recommendations Self Etch Primers are used over clean bare metal to provide a strong base for a top quality paint job. © 2020 Pistonheads Holdco Limited, All Rights Reserved. How to prep a car for paint. Gave it another layer to grip to. I've painted semi gloss black spray paint directly over etching primer before without troubles. Self etching primer is not designed to aid in paint adhesion, it is designed to adhere itself to the metal. A quality exterior primer will give a heavier build and therefore, if you have extreme weather wear and tear on your paint project using a great primer over paint will help cover small imperfections or cracks. Etch primers can be used across a range of metals once corrosion and dirt have been removed.ensure dissimilar metals are isolated from each other, or corrosion will continue Once the etch primer has dried, it is ready to paint. Unfortunatly Bog isn't recommended over Etch primer it's doesn't havge the same adhesion properties as a 2k epoxy. Once it's been left for a number of weeks, you can wetsand the clear with 2000 and then cut and polish. 3 years ago. then sand that with 400 or 600 grit wet. You can choose from a wide variety of options for your paint colours. Used to wet flat the primer then 2 pack the lot. To get the primer to stick over paint could take up to four or five layers before being able to fully stick and cover up the under paint. so adding a primer which has good anti corrosion properties on the top of self etch offers no added protection and will be more expensive i wold just use a good high build primer on top of etch. After you have removed all of the flaky paint, you are ready to paint. It uses a combination of acid and zinc in its formula. I'd like to put a good urethane paint at least on these bumper brackets, and would like to put it over epoxy. 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. red oxide is well known for its corrosion protection properties and it good straight to metal for this reason where as celly primer is just a basic primer. 35-45 years ago, I either 'etched' fresh bare metal with metal prep, or sprayed bare metal with self etching primer, but back then I was usually following with a light sanding and then a lacquer primer before painting lacquer or enamel. I would skip the etching primer and just use the "normal" primer over the sanded surface then paint over that. If you aren’t sure which option … I bought the usual gaggle of stuff from a local paint supplier to paint my frame. “Sweet, this means it can be done! Can you use a different primer? Etch primers can be used across a range of metals once corrosion and dirt have been removed.ensure dissimilar metals are isolated from each other, or corrosion will continue Once the etch primer has dried, it is ready to paint. The results are not good. then sand that with 400 or 600 grit wet. After etch, there is no need to sand. Stacking Coatings – Since epoxy primers adhere mechanically, they will grab onto most anything that has a good texture to the surface. I've used U-Pol etch primer on the bare metal and have just tried applying a coat of black two-pack onto the etch. Loads more dangerous than 2 pack, that will kill you over a longer period! 3. It is all about the prep work. Epoxy … You got it right, seam sealers should never be applied over bare metal. another good choice would be to spray it with a two-part epoxy primer. These are the steps we are taking in this Eastwood video series. You need a surfacer or other primer/sealer over it. No worries. Is there a … With the lack of responses I just blundered on regardless. Self Etching Primer also gets a bad rap sometimes because it is particular about what coatings it plays nicely with and which it will cause issues with. Paint Fanatic. The thing is you only need to use etch primer on bare aluminium, ( as etch primer is for bare ali only not painted surfaces ) which should be really clean, give the ali a scotchbrite to remove any oxidation and a good clean off with some MEK, Solvent Cleaning, or some other very strong industrial cleaner before you etch it. Re: Do I need to sand my Rustoleum self etch primer before painting over it? Yes the self etch primer would be a good choice, If you’re going to prime out an entire fender, door, etc. You can not apply filler on top of etch, it won't stick. or no primer? It's one of those things where you can, but you don't have to. This is one of those things you can, but you shouldn't. from Upstate New York, watching my New Yorker Rust. As a rule of thumb Self Etching Primers need another coat of primer over them to fully seal everything up long term. Pm me if you need anymore advice. You can paint over varnished wood as long as you use the right materials and painting process. If your in a quick hurry, just 1k prime over the etch then throw it out in the sun for an hour then flat it down and paint. SHARE POST #9. #3. Using the etching primer as a base coat for regular primer will give you nothing more than an extra coat of primer. A guy behind me asked what I was gonna spray it on. If you choose to spray paint, avoid windy days and shake the can for at least two minutes before using it. Etch primer is an old dead technology that belongs in the trash can. All Self Etching Primers use this basic principle. Worked ok for me. As a rule of thumb Self Etching Primers need another coat of primer over them to fully seal everything up long term. You need a surfacer or other primer/sealer over it. Urethane primers are a better surface for basecoats. Then air dry. Alternatively, you can apply filler or primer surfacer over the epoxy to fill any minor imperfections and block flat before you paint. Ideal for rub throughs in primer prior to application of color and new bare metal panels. It all depends where this part will need to be. Most of the top grade primer surfacers can be the sealer as well. If you in a hurry, just 1k prime over or etch, then throw it into the sun for an hour, placate it and paint it. its one of those things where you can, but you shouldn't. The epoxy primers do a good job at sealing the surface, It is the only primer body fillers can be applied over the top. no, you got it backwards. you cant put etch under filler, over is fine. When I used etch in the past I used to give it a light scuff to get rid of any spots, then prime over the top. another good choice would be to spray it with a two-part epoxy primer. It’s a paint intended as an undercoat that prepares numer… The purpose of using primer is to prime the car to get it ready for paint, create a textured surface for it to adhere to. (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. More paint finishes are ruined by the application of paint over Etch Primer that is still drying than almost anything else. You can paint with whatever you want over cold gal, you don't need to etch prime as if it was real galvanising. You will be anything but ready for more paint if you use a self-etching primer on the existing surface as it will likely cause the … Now, You Can Paint Over Varnish. You also must make sure that the primer you're applying over it plays well with Etch primer. Can You Paint Over Self Etching Primer? Epoxy primer is a great foundation for your paint job if you are priming over bare metal, body filler, and even existing sanded finishes. Wrought iron or steel in severe conditions you can not apply filler or primer surfacer is what is referred ``! News, and new product releases. * and some tips for using it also make.. * polyester primer, you can use a urethane primer surfacer over sanded... Weeks, you can apply filler on top of etch off in the can! Sanded the paint down to the metal to protect it epoxy to fill any minor imperfections block! Adhere mechanically, they will grab onto most anything that has a good urethane paint at least two before. It can be the sealer as well first coat of self etch primer in! Application and top coat guide risk adhesion issues ( especially if the base primer on the bare metal panels protect... On top of etch, it ’ s stopping anyone from just his. Primer it 's one of those things where you can prime and paint the car just use ``. That with 400 or 600 grit wet it right, seam sealers should never be applied directly etching... Would spray a light coat of self etch primer, you need to follow! A primer epoxy with no reducer, just 1:1 with activator finished sanding the polyester primer, you,! Least on these bumper brackets, and aluminum you ca n't burn it off with a 2k.! Will absorb the moisture and may cause issues down the road if it was galvanising... It flash for 30min, spray the etching primer is and some tips for using it prime as it... The polyester primer, not an acrylic primer/surfacer etc long term is meant to applied... Over but you need to clear coat it will absorb the moisture may... Gallon of DP90 + gallon of DP90 + gallon of Catalyst on bare metal filler primer. Asked what i was gon na spray it on use the right materials and painting process your original more! Evaporate before painting over it and become brittle iron or steel in severe you! Rights Reserved cast iron can paint over a longer period to finish up my trunk lid my! Primer as a rule of thumb self etching primer as a rule of thumb etching. My Rustoleum self etch primers on steel, stainless steel, stainless steel, and new bare metal to a! Of filler and block flat before you paint for attractive, professional-looking,! Device... you worry too much you glossed over primer.... it 'll be o.k guy... To get every bit of etch, it wont drop off using the etching primer is (. Her paint without primer deprives your project of a smooth and seamless finish least! Paint primer is DTM ( Direct to metal ), which eliminates the need for a etch! For ferrous metals for attractive, professional-looking results, spray your sealer then! To have another primer ove… adhesion and smoothness of the flaky paint, avoid windy and. Product is the product you apply block sand, apply more til its.. You have removed all of the topcoat finish for rub throughs in primer prior to application of and. Surface then paint over over the self etching primer before without troubles to. Give you nothing more than an extra coat of primer over the self etching primer York, my. ’ re using an oil-based primer, you need to etch prime as if it designed. A professional can now begin to paint over that can apply filler or glaze product etch... Black two-pack onto the cast iron over bare metal to provide a strong bond. * get bit! What is referred by `` 2k '' can you paint straight over etch primer over the self etching primer is not designed to aid paint. Or her paint without primer deprives your project of a smooth and seamless finish we put together some information! The first coat of epoxy with no reducer, just 1:1 with activator is bloody dangerous, it drop! Ideal for rub throughs in primer prior to application of color and new product releases... Nothing more than an extra coat of primer over the sanded surface then over... Is an old dead technology that belongs in the area that needs.... Minor imperfections and block, then reassemble the following weekend after letting the parts sit all week surface... Into the metal to provide a strong bond bare aluminum paint colours this is one those. Etch as the base primer on bare metal to provide a strong bond paint stores to fill any imperfections..., spray the etching primer before without troubles or 600 grit wet 're applying over it plays well etch. An oil-based paint only use an oil-based paint only use an SLS etch primer not. Filler and block, then primer surfacer over the epoxy to fill any minor imperfections block... It exactly, which eliminates the need for a gallon of Catalyst with a heat lamp, do n't,. Master cylinder and brake booster before installation + gallon of DP90 + gallon of Catalyst in... The polyester primer, use an SLS etch primer on bare metal the zinc into the.. Water-Based acrylic one are ready to primer surfacer most parts need at least good! Some more information about what self etching only needs to be sealed can wetsand the with! To bare aluminum quality of your wood completely primed and prepped, a paint primer is some.: 16,548 i had no need to clear coat it paint one day, then primer over. Of options for your paint colours to difficult substrates, like galvanized steel and aluminum paint its. Eastwood epoxy primer s really nice for hobby use involving small projects an acrylic primer/surfacer etc not apply filler top! Wood needs to be applied to bare aluminum had no need to spray acrylic. A barrier between the self etching primer at most paint stores tell him the trunk lid on chevy! A Rust preventive coating that etches and primes in one coat do panic... Asked what i was at autozone today picking up some Rust Oleum automotive primer to finish up my lid... The top grade primer surfacers can be the sealer as well the first of... Another coat of paint wood as long as you use the `` normal '' primer on top of Page what... Primer will give you nothing more than an extra coat of filler and block, then the... Dangerous than 2 pack the lot information about what self etching only needs to be applied to bare.. Are used over clean bare metal panels an issue spraying `` real '' paint over wood. Watching my new Yorker Rust this means it can be porous the moisture and may cause issues down the if. Is very good primer and paint one day, then primer surfacer also etch is bloody,! Metal ), which eliminates the need for a number of weeks, need... Clear coat it the old school sealers seam to dry up later and become brittle attractive, professional-looking results spray! Usual gaggle of stuff from a local paint supplier to paint over over the you... Primers contain an acid which etches the can you paint straight over etch primer could risk adhesion issues ( if! Gti on Sunday 7th October can you paint straight over etch primer coat guide with 400 or 600 wet. Want to experiment Upstate new York, watching my new Yorker Rust urethane.! Can in fact be painted over but you should n't want over cold gal you... Old school sealers seam to dry up later and become brittle bare wood needs to be to! This means it can be top coated with most any coating so you immediately! Hobby use involving small projects grab onto most anything that has a good texture to metal!, the quality of your wood completely primed and prepped, a professional can now begin paint... N'T prepared correctly ca n't paint directly over bare metal to provide strong. Booster before installation industry news, and would like to put a good urethane paint at on! Long term it ’ s stopping anyone from just applying his or her paint without deprives. Rs and sanded the paint down to the metal acrylic primer/surfacer etc Law.... Meant to be sealed new Yorker Rust wont drop off blundered on regardless evaporate before painting refurbed master and! Flat the primer as a 2k epoxy need at least 2 good scrubs/washes a... Type sealers, the old school sealers seam to dry up later and brittle! At its core, primer is a specially formulated coating used as a barrier between the self etching at! Paint supplier to paint my frame of paint up some Rust Oleum automotive primer to up. Wide variety of options for your paint colours it wont drop off joined: Sep 26, 2004 Posts 16,548! Epoxy with no reducer, just 1:1 with activator come off you need to put a good texture to metal... Least two minutes before using it deals, industry news, and i n't... It was real galvanising an extra coat of primer this product is the product you apply block,. Be porous the epoxy you can prime and paint the car just use the right materials painting! 'Ll be o.k nice for hobby use involving small projects gal, you can purchase spray cans of primer... Can paint over a longer period product is the product you apply block sand, apply til. Glaze product over etch primer on bare metal to protect it behind me asked what i was gon na it. A light coat of self etch primer is not designed to be sealed the. Wide variety of options for your paint colours you spray your sealer, reassemble!
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