Sanding primer before base coat

Sanding primer before base coat. after all that damned work you did on the bay, take the time to sand out any hairs, dirt, fibers and whatnot so We’re now going to sand it all down with 400-grit, get all the mi I spent 13 hours on this car to get it primed up, finish all body work and ready for paint. "KWIK-CLAW™ RTS (Ready-To-Spray) CV Primer White (W130699) is a fast-drying, high solids, two-component (alkyd-amino) formulation primer/undercoat, developed to give a higher film thickness per coat for better build. Allow the paint to fully dry before applying the next coat. For the first sanding, sand your cabinet doors and frames with an orbital Feb 2, 2024 · Apply Primer if Necessary: If you’ve sanded down to the bare metal or used body filler, you’ll need to apply a primer before the clear coat. Proper preparation and attention to detail can make all the difference in achieving a professional-looking paint job. Filling pores helps you achieve an ultra-smooth surface for a high-gloss finish, but tinted pore fillers also color the wood surface. Just don’t over-sand to avoid removing the primer you’ve applied. #2 · Nov 16, 2005. If you want to learn more about DIY Apr 24, 2021 · Bedford. Then, apply two finish coats and allow enough drying time. We’re now going to sand it all Dec 10, 2007 · sanding off majority of the poly primer, then 2k prime. Fine grit sandpaper, ranging from 220 to 400 grit, is used to smooth the surface and remove scratches left by the coarse grit sandpaper. When machine sanding or dry sanding appeared it was 320 solid colours and 400 basecoat. Choosing the right kind of paint, primer coats, and finishes are also crucial considerations in the painting process. even wet sanding your primer with 800 before painting can still show sand scrstches later after clear coating. I personally wouldn't go any finer than 600 possibly 800, but there's no way I'd go finer than that. Allow 10 minutes dry time. Drying speed – a good high-build primer should be ready to sand in as little as 30 minutes; The two main types of primers are: Primer lacquer (also known as 1K or 1-pack, or just Primer) and Etch primer. 26,566 posts. Then, reshoot those areas with primer. Don't apply too much pressure to the sandpaper. Apr 25, 2022 · What Sandpaper Grits To Use To Sand Primer? Before applying primer, sand the surface with coarse-grit (40-grit) or medium-grit sandpaper (80-100-grit). If so, yes, sand back, fix the imperfections and respray basecoat. I use 3M Freecut paper for dry sanding. Yes, primer sealer usually needs to be sanded before applying paint or another topcoat. Mask off and prime. Apply 2 coats of the base coat, and then wait for the paint to dry completely before sealing with 2 coats of clear coat. 600 to 800 grit. Yes, it will work. com INSTAGRAM: https://www. This helps to prevent any damage to the fresh paint layer. Then do your guide coat with a contrasting color to your primer. But, in some cases, sanding helps. To clean the base coat before clears, first, remove any loose or flaking paint with a putty knife. Test the sanding sealer in an inconspicuous area before brushing it on. Use a 400 grit to 500 grit. I have a lot of videos on the website, giving a lot of tips to help you with your own car projects, you can check this blog here entitled Final Sanding HACKS – 2K Prime, Glaze Putty, Dry/Wet Sand, Clean and Prep for Jan 23, 2005 · I would agree with mrcleanr6 using sealer under base coat especially high metallics like silver and golds. What grit will I want to start with and end with before moving on to applying the sealer coat? Thanks for the help. Feb 15, 2023 · Steps to sand primer before painting a car Sanding prime is an essential part of painting a car. Fine grits (180 to 220+): These are perfect for sanding surface imperfections in the primer, prior to paint application. 2) The finish job will only look as good as the base. Do not use sandpaper coarser than 320 on painted cabinets. Clear hides nothing so any problems in the base must be corrected first. Scuff sand all recessed areas and panel edges Sep 27, 2014 · Raven1. Power tools are OK to start with but hand sand with the contour of the body on the way out. Sep 21, 2017 · On the other hand, 4:1:1 comes out to be a regular primer and not so much of a high build. Aug 15, 2019 · You need to sand down a 2K primer sealer, which is like a primer filler sealer, before paint. #12. Before dry sanding appeared it was 600 wet ‘n’ dry for solid colours and 800 wet and dry for base coat. but if i break through the 2k i will usually use an epoxy sealer just in case. Dry sanding 2k primer surfacer with a d a sander. Start with a single vertical strip at the cut-in corner. Now the excess pore filler will wipe away cleanly, staying May 1, 2021 · So I put about 2-3 coats of epoxy primer first and then we put about 2-3 coats of our filler primer, sanded it down, and give it a quick seal (got mine from Nason), and then we painted candy coat on top. Before applying pore filler, first seal the entire surface using a sanding sealer and lightly sand off any raised grain. the jams i would also sand wet with a gray pad and a product like sem's scuff & clean . Once primer is dry, you should sand the primer before moving on to the Jun 15, 2017 · To sand wood with primer on it you should consider a finer grit sandpaper (like a 220 grit sand paper). 4542 posts · Joined 2008. Then sand the area with fine-grit sandpaper until it’s smooth. I’ll sand it down with 400 to 600-grit wet sanding, then do my base coat clear coat. motivatedpainters. It’s important to ensure that the surface is smooth, free of contaminants, and ready to receive the new paint. 3) The only time you need to wet sand between clear coats is if you wait longer than 24 hours. Oct 7, 2020 · For the application of primer during your car painting job, experts recommend that you wait about 24 hours before putting your enamel-based paint or base coat. If you want to dry sand primer you should use a sandpaper designed to be used dry only (not Wet&Dry which will clog quickly and risk scratching the primer). The best grit for sanding before primer and paint is 150 to 220, but I prefer 220-grit. Apr 19, 2009 · 1422 posts · Joined 2000. #9 · Sep 28, 2014. Problem is I can see the 400 grit sanding scratches. This article will explore how to sand down Kilz Feb 10, 2024 · Primer Sealer Sanded is a non-sanding product that is used as a base coat before painting. Enjoy your results Nov 14, 2015 · The correct process when applying primer. Moreover, you can use this grit range as a sanding block. Then spray another coat building to 1 to 1. I sprayed two coats of base and I still could see sand scratches so I stopped. Aug 5, 2009 · 600 is definitely on the safe side I've seen people sand with 1000 or even 1200 and re-base/re-clear a mistake/trash. A clean workspace is essential for achieving the best results. Jul 7, 2023 · Seal pores before filling them. Ensure the base coat is completely dry before you start sanding. It is also effective in preparing the primer for paint adhesion, as it creates a microscopically rough surface for the paint to grip onto. Apr 25, 2021. #5 · Apr 19, 2009. Finally, apply a thin layer of primer and allow it to dry completely before proceeding to the next step. In contrast to sandpapers in the 32- to 40-grit range, 80-grit sandpaper is gentler on the surface of vehicle panels. Dip the roller into the primer, making sure it’s completely covered. Sand back and forth within the same area, adding more water often. red pads have the sanding grit of about 220 paper so it's a bit much for lacquer top coats if your not using a sealer 1st . This ensures proper adhesion and a uniform color. I agree that going to 400 for solid and 600 for metallic is the accepted practice for the final sanding before going directly to base but I would think adding a coat of sealer would change that. This will ensure a Jan 21, 2020 · If you are looking to sand a surface before applying primer, the best grit sandpaper to use is between 320 and 400. 5,116 Aug 24, 2020 · Quote from: AmadeusCharger500 on August 26, 2020, 10:47:46 PM Thanks everyone for your input. Tools, mater Final sanding before applying colour coats is generally carried out wet using the appropriate fine grades of WetorDry abrasive paper. B. It's just more work, money and time Instead of Polyester Primer, they should relabel it spray-filler How To Sand Primer Before Painting A Car . Jun 18, 2018 · for 3 stage pearls I've found 400-600 to be sufficient, as the base color will fill the sanding prior to the pearl coat. ksungela said: I've read people spraying epoxy sealer coat and waiting anywhere from till it flashes (15-30 minutes) to waiting 2+ days, before base. Start with the low-grit end (600 grit) and slowly work your way up to the finer 800-grit sandpaper. 600 – 800 grit sandpaper is the best sandpaper grit range for sanding surface imperfection in the primer before you apply the base coat. Think “medium wet” coats that are neither too wet and heavy or too dry. I. On the other hand, a wood coating comes after the paint or stain coat. Rushing this step can lead to streaks and an uneven surface. To sand between coats of primer, use fine-grit sandpaper (120-220-grit) only. Other Prepping Steps Before Painting. And if you don’t sand the surface smooth between coats, the finish may have a grainy texture. First of all, my primer is a 2K Urethane. 320 to 400 grit sandpaper is used for fine finishing and leveling filler surfaces before applying primer. 1) The base should not be sanded before clearing. May 9, 2014 · Stage #2 - sanding down the 2K primer before I apply a final thin coat of epoxy primer (sealer coat) prior to spraying the base coat. If the imperfections are in the application of your base, then usually a full wet coat will do the trick, extending your blends a bit further out. This will prevent any stains or oils from seeping Oct 21, 2022 · If your goal is a show car straight finish then the best way to finish sand the final coat of primer is wet sanding by hand with a guide coat. They are also used for removing base coat imperfections. We’re now going to sand it all down with 400-grit, get all the minor imperfections with glaze putty. Jun 30, 2016 · Start by dry sanding with 220-240 grit production paper to thoroughly remove the glossy layer from the gelcoat. Jul 14, 2009 · Quick list of steps. Sep 23, 2022 · 1k. A poorly executed paint job is Aug 1, 2019 · Thanks for joining me today in today’s blog entitled, 2k Filler Sealer Primer Flash Time (Is Sanding Needed Between Coats?). There are different techniques, so it depends who you follow. Pass the paint roller over the ridged area of the paint tray a few times to remove excess primer. Mike Bumbeck. 400-600 if sealing before basecoat. As such, 80-grit can be applied to the hood, roof or door panels of a car or van without leaving rough streaks. I have wet sanded it with 600 and will be shooting it again tomorrow evening. That’s the same with all of them. A warning about sanding the gelcoat: use caution to prevent sanding all the way through the gelcoat layer, which can open up pinholes in the fiberglass Jan 8, 2012 · Jan 17, 2013. Scratch marks are hard to sand out without grinding the coating down to the primer and starting over. So you can see where you need to re fill or whatever. Painting cabinet doors before the previous coat has dried can result in air bubbles. Also, you might want to sand between paint coats too. Etch primer is a great sealing coat option designed to be applied on bare metal. Lightly sanding the primer sealer helps to achieve a smoother finish and ensures better bonding Jan 31, 2022 · Basically, priming is extremely important to create an even, solid base that takes whatever paint color you apply. Seems to me 320 would leave sand scratches. Apply guide coat to identify any low spots, pinholes, or other surface imperfections when sanding a Primer Surfacer. The primed surface is wet sanded to smoothen it up before spraying the base coat. or use the epoxy reduced as a sealer ,about 3coats,then sand with 400 ,a guide coat will help also. Any sanding of base coat will ruin your new paint job. some people say 20-30 mins after base coat some same 24 hours? Leptons. The guideline says you can sand the primer with 320 grit sandpaper before applying a urethane color coat. Preparation for solid colours can be with 500 grit or finer WetorDry papers, but metallics and basecoats May 6, 2021 · Then, use a sprayer to apply 2 coats of primer to the car and wet sand with 2000 grit sandpaper. The clear coat is applied twice after applying primer and the two base coats to add a gloss. The first coat is called your "tack coat" and will help each additional coat bond to the surface. Sand the primer out your finest grit and then clean everything up. Fine (200-400) Used for final smoothing before the priming stage. Step 2: Wet sand the target area. The first application of sanding sealer should be applied as a very light dust coat. Yes, you can paint over epoxy primer without sanding, but it depends on the situation. beyond static, Jan 8, 2013. I prefer primer sealers. The primer says to apply to topcoat within 1 hour or after 24 hours. Primer is paint only because it goes on the car and does have some tone of color. Posted September 23, 2022. For the thick single stage paints I spray at work, I’ll sand up to 320 for solids, and 400 for metallics. It also allows the top coat to more easily adhere to the primer. At first, you can follow someone else’s techniques, then create your own Today we're going to spray guide coat over the primer and show how to sand it off using an electric 6" D/A with 220 grit. By topcoat, I mean bc/cc or single-stage urethane. I am wet sanding the primer 400 grit and then 600. To work properly, wood stain needs to soak into the pores of the wood. It helps eliminate tiny imperfections that could become more prominent once primer and base-coat are added, ensuring a smooth and flawless paint job. . #1. That’s why you need a sanding primer before painting the same, like a boat for the first time. Spray the primer evenly in broad back-and-forth strokes and allow to thoroughly dry (up to 24 hours) before moving on in the process. Hand sandin May 21, 2024 · Preparation. One coat of paint usually won’t hide the underlying color and sheen on trim. The reason we usually recommend not sanding is that the paint could still be too soft to sand despite it feeling dry to the touch. Use a tack cloth to clean the surface, removing any dust or debris that might interfere with the sanding process. When wiping with a sponge, do not use a circular motion. For tips on fixing mistakes and buffing the paint, scroll down! Jul 4, 2008 · i would sand any primer, no matter how long it sat, especially when it was primed in a garage, any and everything that got into the wet primer is going to show up in the base coat, and your pretty stuck then when you finally see it. 320 to 400 grit. I've been reading about final sanding before applying the topcoat, and have been seeing conflicting advice. Jul 8, 2020 · Car Painting base coat Denibbingwww. Jan 8, 2013 · You only need to sand between coats if you spray outside of the drying window. Mar 1, 2024 · Ideal for initial sanding to prep the surface for finer grits. Actually, sanding between coats of primer is pointless. Learning how to prep your primed surface for paint. Applying the Clear Coat. Primer Lacquer This type of primer is normally available as ‘high-build’ primer. Jun 19, 2012 · The reduced epoxy will fill the 320 scratches. youtube. Jan 8, 2016 · Step 1: Use primer. Sep 30, 2019 · Sand Trim Between Coats for an Ultra-Smooth Finish. For a smooth finish, sand the trim before applying each coat of paint. This is not Lacquer, not even close. 327 posts · Joined 2004. Very Fine (400-600) Suitable for sanding between coats of primer or paint. If you’re painting over E-Coat, which is a special coat that goes over metal, you can sand it down with 320-400 grit, then put a 2K filler primer on top of it, wash it down with 400-grit and you’re ready for paint. Watch My Latest Video Here: "HEADLINER REPAIR - How To Replace Fix Torn Sagging Roof Liner In Car Or Truck - TAHOE YUKON ESCALADE" https://www. Oct 9, 2018 · Primer is paint, but not in the way that paint is paint. If you repaired paint damage, you must apply a spray primer paint to create a surface to which the base coat can adhere. #9. Your car must be lazer straight if all you needed was a couple coats of epoxy. Stir and pour the mixed primer into a paint tray. Its main benefit is that it seals off the metal’s surface, acting as a barrier between Nov 7, 2018 · Keep sanding and work out to finer grits. May 16, 2013 · your using a two part primer 2K and then a lacquer over the top you will want to sand the primer with 500 to 600 grit wet . You shouldnt need to seal it after that but a quick breeze over with 600 wouldnt hurt. Allow the previous coat of paint to fully dry before sanding. This means that there will be fewer bumps or ridges in the finish, which can make it look more polished and professional. After you have sanded an area of one square foot (approximately), you will then wipe the area with a sponge. Any areas left glossy will not give the primer a tooth to bite into for adhesion. I usually block my first round of primer with 180 grit, reprime, and then block with 320. Always start your paint project with light coats. No sanding to be done between step 1 and step 5. We will demonstrate and go over the Apr 14, 2024 · Medium grits (100 to 150): These are good for sanding surfaces that have already been painted, but need to be smoothed out before applying primer. Even wiping back and forth can leave particles behind. So, after applying your etch primer on the bare metal, you can go ahead with a base coat over it and a top coat. Then after you have sanded with your guide coat and repaired whatever, you prime again. By using this method, you can reduce the wet sand paper from 10 pieces to just these two. Do not apply stain to the top of the sanding sealer. Sanding primer before base coat helps to seal the surface of the object being painted. 3-4 coats is the maximum amount of primer you should spray at one time. May 6, 2024 · In conclusion, sanding between coats of paint is an essential step in achieving a smooth and even paint job. If the bodywork and primer blocking was done all you had to do was seal and shoot your base. OneMoreTime. . beemdubya. Some naptha on a microfiber cloth pulled all this gak off even though the area Apr 26, 2007 · Part 8: How To Color-Sand and Polish All That Paint You Just Sprayed on Your Car. Start at one location and wipe in a Jun 23, 2022 · Sanding primer before base coat helps to create a uniform surface for the paint. Aug 15, 2022 · The primer is Kwik-Claw. It provides a smooth surface for paint application and helps improve adhesion. Your last 1—2 coats should be heavy but NOT too heavy so the paint runs or sags. Choose the Right Clear Coat: Select a high-quality clear coat that is compatible with your base coat. This coat should have an evenly wet and glossy appearance. May 13, 2019 · May 14, 2019. Although the rocket does not need any more primer, I'm wondering if there are any advantages to applying another light Sep 27, 2022 · In addition, prepare the surface thoroughly with sandpaper before applying the primer. Mar 1, 2022 · QUESTION:Can you use a 4:1 primer as a wet in wet, before base clear o you have to wet on wet thin with 10% then wait an hour to base/ clear. 60% of the area are down to bare plastic. Oct 3, 2018 · Learn how to wet sand auto body primer for paint prep by watching this short, instructional video. Jun 15, 2012 · Loads of other people have also. This means you don’t always need to sand it before painting. Apply 2-3 coats of primer, allowing sufficient time in between coats for it to cure properly, Apply a guide coat of matte black spray paint to aid your sanding down progress, Using 800-grit wet and dry sandpaper – flat down the finish until perfectly smooth. Paint is paint because it creates an enduring and beautiful covering for your car’s body. Additionally, this range of sandpaper can help flatten the surface for Apr 22, 2019 · I forgot to put on a layer of primer before the base coat. You may find you will need an additional finer grit sandpaper. Check your air pressure to the gun, too low of pressure will not atomize your paint properly. I've always sanded the primer with 400 or 500 grit before applying the final coat. How can I fix this? Basically Jun 25, 2015 · I think you'll be fine with 800-1000 grit ( wet or dry, wet being the better alternative ) The issue, BEFORE, you start/add colour coats, would be to seal your final primer coats, after sanding ) From experience, putties, any type really, tend to shrink over time & in some cases become visible through the colour coats, especially true for "ghosting" Nov 16, 2005 · Sort by Oldest first. You could try it either way. Jun 24, 2018 · Spray the paper itself, then start gently sanding the body of the vehicle. 600 if going straight to base. U dont really need a sealer if its going over 2k surfacer unless its a transparent color or something. Sanding the surface lightly can help the primer adhere better. But, the thicker it is, the more of a high build it gets. Prime than do body work. Small areas can be sanded dry but a finer finish and extended abrasive life is achieved by wet sanding. OK, I'm finally moving from acrylic lacquer to basecoat/clearcoat. com/motivatedpainters/MOTIVATED PAINTERS AS IS WOULDN'T BE POSSIBL May 25, 2004 · 1 prep body (sand old paint / new primer) 2 spray seal coat 3 Spray base coat 4 spray clear coat 5 wet sand and buff. Follow up your tack coat with 2-3 medium coats. The guideline also says you can optionally wet sand with 400-600 grit. 5 mil thickness. Dec 2, 2023 · It is ideal for refining the filler layer. I use a transparent sealer works good on spot jobs too. The 4:1:1:1 turns it into a primer sealer, which is a lot thinner. Question: I over sand the clear but I didn’t get through the base, After buffing, you can see sand marking. Don’t rush it! Make sure to follow the primer’s Flash Off Time recommendations. Now the base coat is already on, should I sand it off and start over or bite the bullet and continue with mid coat and clear coat? Before applying the base coat, I sanded the entire bumper with 400 grit wet sandpaper. I have sanded out base coat using 600 grit wet sand paper, then followed up with a couple more coats of base. I've already done a few rounds of primer and light sanding, and am ready to apply the topcoat. Seams like a lot less work (no re-sanding) to spray base sooner than later. The poly can crack when the build is too high; it's ment to be used like a glaze skim coat. Ultimately the goal of the sanding if trying to get rid of Jun 16, 2020 · Bare parts should be primed and put a good 2K filler primer, sand it down and paint it. Sanding sealer negates this process. Jun 6, 2006 · If you are planning on laying on some color, I would finish wet sand with 600. Epoxy primer is smooth and lets other paints stick to it well. Further, wipe the surface with a wet cotton cloth and let it dry thoroughly before adding the topcoat. Primer sealer helps to create a smooth and even surface for better paint adhesion, but it can also have a slightly rough texture. Paint Sealer. High-build primer has three main functions: Stay away from sandpaper coarser than 220 grit. Next, wipe the surface with a tack cloth to remove any dust particles. com/wa Oct 3, 2008 · Sanding basecoat. Their purposes are vastly different, but in many cases, one can’t survive without the other. Today I shot 3 coats of SPI Dark Red base and now it will sit overnight before clearing. Spray basecoat fairly wet, it will flash quite quickly and not sag unless it is loaded up too much. Additionally, you should consider using an orbital sander as it will not alter the appearance of the natural wood. Fine grit sandpaper is ideal for the final sanding before applying paint. 12. What grit wet dry sand paper in best to sand primer before applying the finish paint coat? Krikkit. We meant "take a breather" literally. For oil-based paints and primers however, waiting 24 hours can be best for achieving optimal results. O. Like. Before spraying sanding sealer, stir and strain. Extra Fine (800-1200) For a highly polished surface, perfecting the finish before waxing. And the extra blocking session will make the panels even smoother. instagram. I'm using Rust-oleum Ultra Cover 2x primer. 11672 posts · Joined 2007. Sand the trim with a fine-grit sanding sponge. Feb 2, 2022 · Medium: 80-Grit. You're better off to let 3-4 coats dry, Block Sand, and then apply a little more primer instead of spraying extra May 16, 2019 · I presume you mean imperfections in the substrate, under the base. Technically, you can paint over etch primer. No one wants that. Block sand the Primer Surfacer with P280-P320 grade paper using a sanding block until the guide coat is removed. Please let me know if any additional info is needed. If you are using water-based paint or primer, then a good rule of thumb is to wait at least three hours before starting the second coat. Normally I finish to 600 grit wet but since it was Any sanding particles and dust are removed by thoroughly rinsing the area in readiness for the primer if needed and the subsequent base coat stage. Primer is a bonding Jan 1, 2023 · It’s ideal for pre-primer sanding, fine sanding spot putty, final body filler sanding, and rough primer sanding. However, light streaking will still be present if you apply heavy force. Wet sanding primer before painting can really cut down o Feb 29, 2024 · Clean the wood, apply a second coat, and sand again. Take your time. Unlike other types of sanding, wet sanding movements should be back and forth, in a straight line, rather than in circular motions. Mar 2, 2014 · Talks about painting. You should sand your Kilz primer with 220-grit sand paper after applying it. One coat is all that is needed for most pre-catalyzed and post-catalyzed topcoats. Feb 18, 2023 · 600 – 800 grit sandpapers are excellent for sanding surface imperfections in the primer layer before you apply the base coat/paint. Use a finer grit of 320 to 420 between coats of primer and paint, or if you're sanding cabinets that are already painted. 1000 – 1200 grit sandpaper. ll. I've also been known (if out of finer paper) to spray a coat or two of 895, or Base Fix, (what amounts to clear base) before applying color, especially light metallic such as silver, and light blue. Sand with 800 grit wet if you plan on spraying metallics. I am having to re-do the gas tank cover on my 34 because I tried to get away with 400 before the base. I have'nt had any dye back problems using sealer either. Experts also recommend that you wet sand your vehicle with a 1000 or 1200 grit piece of sandpaper. But, you can sand that with 400-grit and get it ready for base coat clear coat. This sandpaper grit range is perfect for removing base coat imperfections. Oct 22, 2022 · Typically, after four to six hours your first coat is safe to recoat. Location: Round Rock, TX, USA. The stain will sit on the surface and not be absorbed. Wetsand with 600 if you plan on spraying a base/clear solid color. Coarse or medium-grit sandpaper will remove bumps, imperfections, and existing finishes from the surface. Sanding sealer, on the other hand, is a type of primer with solids that is used to fill imperfections and create a smooth base for paint. Mask, prime and base coat. I spent 13 hours on this car to get it primed up, finish all body work and ready for paint. If the primer is new and clean, it’s often ready for painting right away. Unlike paint application, which measures time between coats in minutes and For the waterborne base coats I spray from imperium or Sikkens, I’ll generally sand up to 800 grit for metallics, 600 for solids, and only 400 if I plan to spray a primer sealer before base (you don’t usually sand primer sealer). This means you may have to sand the finish down and start over. It is no longer considered good practice to wet sand primer due to risk of trapped moisture. Oct 3, 2023 · By MikeMcMillen October 3, 2023. May 18, 2024 · To get the best results when painting over Zinsser 123 primer, proper preparation is key. Thinning it out, you could try it but if you have a rough surface, definitely I would recommend sanding it before spraying base coat clear coat. Applying at least two coats of paint is recommended for the best results. #7 · Apr 27, 2011. For my own piece of mind, on this project, I'm going to 600 before the reduced epoxy. Then Prime over your filler and repairs again. This range of grits will be able to effectively buff away any existing primer, ensuring that you have a clean and level surface before adding a fresh coat. I would reprime and then sand with 400. The surface must be clean, dry, and free of dust and debris. And if you want an extremely smooth look, sanding the primer under the layers of paint will do the trick. Sanding removes imperfections and opens up the surface for primers to permeate. Featheredged areas should be final sanded with P280-P320 grade paper. Aug 2, 2017 · Now, let’s talk about Wet Sanding & Dry Sanding Techniques When Prepping for Base Coat Painting. Apply the primer in 3- x 3-foot sections. Feb 7, 2017 · Here's the story: Shot 3 coats of build primer on sandblasted parts. Typically, it’s recommended to wait at least 24 hours between coats to ensure the paint has cured and hardened sufficiently for the sanding process. I had a feeling thats what you did. Waited 36 hours and then guide coat and wet sand with 400 grit to remove guide coat. SPI dries slowly. Apr 20, 2011 · mike the painter. in vo xq ib oc hs wo yc zw ui