What grit sandpaper before epoxy primer

400- to 600-Grit: Mid-Range Dec 10, 2007 · sanding off majority of the poly primer, then 2k prime. Here is what I have so far: Bare metal sanded with 80 grit. Mar 22, 2022 · Definitely, the Epoxy primer. Both these grits can effectively remove the existing primer and help you flatten the surface. 80 grit for the bare metal and 180 (or smoother) for areas that are not bare (filler, prior paint, or prior primer). I tried wet sanding a section, with a misting bottle and rag for clean up. Dec 8, 2023 · Fine sandpaper 100-120-grit: Used in most projects, this type of sandpaper will work for the final smooth process before the job has been completed. BK-if you seen scratches showing in silver after using a grey scotchbrite the sealer mist have been fairly fresh making for Oct 10, 2022 · Not only are grits from 60 to 1000 available, but you should only need 60 to 80 grit for the necessary initial abrasion and 180 to 220 grit or perhaps even 320 for the ultimate sanding before applying primer or varnish. Feb 29, 2012 · A coat of epoxy primer should be applied first THEN you can shoot 2K urethane primer over the epoxy primer. Once you have completed smoothing the surface, you can paint it to further reduce any evidence that a repair was made. Nov 11, 2023 · Sandpaper grit rating is typically denoted by one of two rating designations. The epoxy will requires 48-72 hour cure before sanding. Bond within 1 hour. One to two coats will render a 1-mm dry film thickness, which is typically enough to be completely effective. Nov 1, 2005 · Epoxy sat for a week to full cure so sanded with 180 grit, then applied filler. Apply 1 additional coat epoxy after filler (as as sealer) then applied 2K. Grit Number. BLock 2k after full cure with 180, then apply 2 additional coats. #4 · Jul 21, 2014. * For S_1sealers you make use of 180_220 grit sandpaper. Jun 4, 2012 · The reduced epoxy will fill the 320 scratches. Apr 24, 2007 · I have (morton) epoxy primer over my filler and bare metal. Completed 9/2012, Sold 9/2021. Before sanding, it is essential to ensure that the primer is completely dry. I like sanding to 600 before epoxy sealer and paint, I have seen sandscratches show on fine metalics using 320 dry or 400 wet-on solid colors they'll never show. Dec 11, 2023 · What is the best grit sandpaper for epoxy resin? The best grit of sandpaper for resin often falls within the range of 120 to 2000. Using your putty knife, apply the epoxy and do your best to evenly spread it over the low areas, creating a surface that’s as even as possible. If a normal primer is used the Jun 20, 2012 · Apply it in even coats, then use a foam sanding block wrapped in 80 grit sandpaper to smooth it, followed by 120 grit then 400 grit. 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. #3 · Dec 10, 2012. 1. Period! I have filled 80 grit scratches with SPI epoxy many times. Yes, you can sand epoxy primer. Epoxy primer is better than an Etching primer. Jul 6, 2021 · There were a lot of firsts in today's video! We block sanded our first layers of epoxy primer, used A LOT of body filler, tried using a hammer and dolly for Dec 16, 2023 · Before we embark on the journey of sanding epoxy primer, let’s first establish a solid understanding of what epoxy primer is and why it’s a preferred choice in various applications. So use a good Epoxy primer, and then after you spray your epoxy primer, you don’t have to sand it. This way you’ll save hours on trying to take the metal down to a grit that is essentially unnecessary as it would have been completely covered by the primer. Then, let the epoxy cure. Besides SPI, Valspar VP50 and HOK KP2CF are sandable epoxy primers. Clean surface with SPI 700-1 Waterborne Wax and Grease Remover and let sit for 45-60 minutes before Jan 5, 2011 · Sand and Clean Sand to a uniformly frosty, dull looking surface with 80-100 grit (no finer) sandpaper, rewash with S-80 Wax N’ Grease Killer , S-90 De-Wax Etch & Cleaner . Primer to use before painting the model. Best Sandpaper Product for Epoxy Primer Dura-Gold Premium 320 Grit Wet or Dry Sandpaper Jun 30, 2020 · YES but the epoxy should be cured and dry at least 10 days in hot weather or up to three weeks if cool. Cons – Very thick and will dry VERY hard. This grit level can also be used for taking off multiple coats of paint or any varnish that is difficult to remove. 180 to 220+. Then I'll finish the primer in 400 grit as I'll most likely be choosing a solid colour. The cured Epoxy or Urethane coating will require block sanding with 320 and 400 grit sandpaper. Over Bare, Clean Metal — Epoxy primers are amazing at sealing up bare metal and not allowing moisture or corrosion to creep in. Once it has dried, you can then use a fine grit of sandpaper to smooth out the surface. It would also be very worth your while to spray two more coats instead of just one for maximum adhesion. Going from 220 to 400 on the primer with a long AFS block is pretty nice for long Efficiency wise you are far better off taking it to 80 grit and then taking the primer down with 320 (dark colours) or 500 (silvers/light greys). 2 coats of epoxy, dry 24 hours. At this point you can sand with 400 to 600 wet. But if you do, I use 220 grit to knock off the nibs. 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. Medium sandpaper 60-80-grit: Generally used to get rid of scratches and sand rough wood. . If you’re using a spray bottle, sprinkle water over the surface. The second round of G2 could be optional if the car Sep 30, 2022 · Using the right sandpaper grits from start to finish is crucial. Feb 9, 2012 · For me its generally epoxy primer (I like black), 2 coats of G2, block with 80 till start seeing epoxy, spray 2 more coats of G2, block with 180 till seeing epoxy, then 3 coats of 2k primer, guide coat, block with 400. Jun 18, 2004 · It is always best to apply this product over epoxy vs bare metal For long term corrosion and durability and when done blocking this product spray a coat of 2K primer for final sanding or epoxy over it before painting for best long term results. Filler where needed after the 24 hours, but within 7 days. How To Treat Bare Metal With Epoxy Primer #epoxy #howto #carpainting Feb 15, 2007 · Then, we went to progressive finner grids as needed for the top coat paint. Epoxy primer seals out the oxygen from the metal along with moisture, chemicals and UV rays. For best results, Mick says to scuff the surface with 80- or 150-grit sandpaper prior to brushing on the chemical stripper. Generally, after primer is dry / cured, sand surface with 280-360) grit sandpaper, or whatever grit recommended by the manufacturer for top coat application, blow off, and re-clean if necessary before applying RAPTOR. The Eastwood Epoxy Primer should be applied in medium wet coats, allowing a half-hour between each coat at around 70 degrees. That is how I would make the decision. Specifically, 320-grit sandpaper sheets are the coarsest option you can use to sand the car surface before you apply the primer. * For cold cure products you make use of 150 grit sandpaper. I'm about ready to prime with epoxy primer followed by Summit's Hot Rod Flat Black as a finish coat. 2 more coats epoxy. A way of thinking I use with Evercoat is "the filler and glaze sand out with about the same effort/strokes" so I will always judge the dent and if it's going to take more than 2 coats Aug 23, 2010 · If you are within the time window, then just shoot the primer surfacer without sanding at all. 120-grit is a common type of sandpaper used for such jobs. wet sand, as mentioned 400-600 depending on paint type. Feb 11, 2024 · Select the sanding block: Choose a sanding block with the appropriate grit. Now mix and apply Epoxy Primer directly on to the bare aluminum. Pros – Very thick and can fill over 60 grit sand scratches, even up to 40-grit although I would sand until at least 80-grit if possible. Scuff sand all recessed areas and panel edges with a general-purpose scuff pad or equivalent. the primer will fill in the majority of the scratches. Coarser grits (120 - 240) are suitable for shaping and removing imperfections, while finer grits (400 - 800) are used for smoothing and polishing the surface. Following the advice here, at this Aug 17, 2007 · BarryK. Block sand the Primer Surfacer with P280-P320 grade paper using a sanding block until the guide coat is removed. basically it's not bonding to the primer, and even if you seal it, it still needs to be sanded with 400 grit or better not just a scuff pad. Sounds to me like you DO sand with two different techniques. Then a sealer coat of reduced epoxy before basecoat. Once it is dry, use 400 grit sandpaper to roughen to surface a little so that the base coat will stick better. Lastly, wash it with 400 to 600-grit and you’re ready for paint. From there I use reduced epoxy for sealer. If you do sand, make sure to use very fine grit sandpaper (200 grit or higher) and be careful not to scratch the surface. 2–3 coats of regular build primer. Apr 5, 2023 · Step #4: Sand your epoxy resin with fine grit. * For 2:1 epoxies you sand with 150 grit sandpaper. More than a week past, sand filler, some block sanding and 180 with the DA since more than a week past. you shouldnt have to worry about the scratches in the sheetmetal before priming. Give it a couple of good washes with a strong concentration of Dawn dish soap and hot water. It is designed to be painted on top. or use the epoxy reduced as a sealer ,about 3coats,then sand with 400 ,a guide coat will help also. Knock off any loose paint with a scraper and, using either a sanding block or a dustless DA sander, lightly sand the entire bottom with 80-grit sandpaper. We do planes all the time this way and the planes do 500 Aug 15, 2005 · If you have the time to wait and want a better as sprayed finish then apply two coats of epoxy sealer and let it cure completely- should take 3 days to a week, then lightly sand with 600 or 800 grit and lightly scotchbrite any non sandable areas and apply your paint. Mar 23, 2022 · Before you can apply primer to your car, you’ll need to remove the current layer of sealant and paint; to do this, you’ll need to sand the vehicle. same for the roll bar. As such, 80-grit can be applied to the hood, roof or door panels of a car or van without leaving rough streaks. For sanding epoxy primer, it is recommended to start with a coarser grit (such as 320) and gradually move to a finer grit (such as 400 or 600) for a smoother finish. If your cured epoxy contains any runs or imperfections, it is recommended that you start with either a 60 or an 80 grit Dewax the substrate, removing any grease, wax or oils first, using an appropriate solvent, and sand the surface according to the paint's surface preparation instructions. Any sandpaper below or around 500 grit is ideal for quickly sanding the primer layer and removing the upper car paint surfaces. * For quick fare, allow it to harden for a while then sand with 120_150 grit sandpaper and then apply more quick fare. It works very well. Apply the first coat of marine epoxy primer and allow the surface to dry to become tacky. It’s best you begin with around 1000-grit automotive sandpaper so you can remove the sealant and paint. Follow the epoxy primer manufacturer’s recommendations for top coating. to grind down to bare metal and prep it for a epoxy 2K primer, look for any damage and repair those area with patching that is compatible with your epoxy primer, sand and blend that 2. The bond has compromised. It's just more work, money and time Instead of Polyester Primer, they should relabel it spray-filler Jan 23, 2012 · 471 posts · Joined 2012. #4 · Aug 20, 2009. Apply a coat of epoxy sealer before applying the base coat. Apr 15, 2015 · After sanding, wipe off the residue. Jan 18, 2022 · How to Prep a Car for Paint: Scuff it Up. A high build primer is a surfacer that functions as a scratch filler. How long to wait before sanding epoxy? Nov 20, 2006 · STEP 10: Finish sand the surface with 400 grit sand paper, clean surface with a wax and grease remover (PPG DX 330) and then apply a fast evaporating cleaner (PPG DX 220). I had a feeling thats what you did. Once the epoxy has cured, you want to lightly sand the area with a higher-grit sandpaper, something close to 320-grit, to get a completely smooth surface. #7 · Apr 27, 2011. I blocked almost all the featherfill off the car. NOTE: To use the epoxy primer as a sealer, follow the mixing instructions provided by the manufacturer. Epoxy primer, with its exceptional adhesive properties, serves as a robust foundation for subsequent layers of paints and sealants. 11672 posts · Joined 2007. Here's to you DoC, you will always be here. Fill and fair between each coat of primer. Jan 8, 2013 · if i have a heavily pitted, deep sand scratches or wavy panels i will do the two sanding steps. Either way, it's time to sand using fine-grits. Epoxy primer can be sanded to achieve a smooth surface for further painting or finishing. Dry sanding the primer really clogs the paper fast. Dec 10, 2012 · 73 posts · Joined 2012. Sanding a wet primer can cause it to peel off, which can ruin the entire paint job. And the extra blocking session will make the panels even smoother. Dry sanding leaves deeper abrasions and can remove the epoxy primer entirely. Start with a heavy-grit sand paper, such as 220 grit. This step enhances the bond between the primer and paint layers. '55 Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod. #4. Sand the Epoxy Resin. What grit will I want to start with and end with before moving on to applying the sealer coat? Thanks for the help. The best way to do this is to shoot your primer surfacer right after the epoxy has flashed sufficiently (30-60 minutes for PPG DPLF). Epoxy primer is a popular choice for many applications due to its excellent adhesion and durability. If after 7 days, 180, red scuff pad, then 1 coat epoxy. A grey scotchbrite is equal to 800 grit. Wetsand with 600 and go to base. Once the surface has been sanded and cleaned, apply two to three coats of finish. Emery: Too sharp for use on wood, Emery cleans up and polishes metals. Same with a 2k filler/sealer primer. Before spraying epoxy over other primer, it was sanded with 180 or coarser. The heavier grit will cut the surface level rather than follow the contour of the high and low spots. However, you can use 180 or 240-grit sandpaper to remove rust and other types of Mar 20, 2024 · For the best results, lightly sand the primer with fine-grit sandpaper (600 to 800 grit) before applying the topcoat. Apply an aluminum pre-treatment primer or solution such as Alumiprep-33. Please avoid pouring too much water. My question is technique - what combination of blocks, DA, etc. I usually sand 2K with a coarse grit initially (120) and if everything looks good, guide coat, block with 180 till 120 scratches are gone, guide coat again, block with 320 till 180 scratches are gone. Nov 14, 2007 · BarryK said: Setting for two years, it should be "Hand sanded" with 150-240 for proper adhesion for the next coat of epoxy. Then I used my 2k primer for final blocking to 600 wet. Going down to bare metal is the best & safest assurance for an older body. I'm sure there are others. Let set four hours or over night and then take a close look, if you held the 80 grit flat two coats will cover it, some areas like edges or humps you may see some slight scratches and for those areas shoot the europrime over that area with out sanding the Dec 7, 2015 · Sanding with 80 grit is a ssuming you are down to BARE metal. I would reprime and then sand with 400. 3 coats of filler primer over a coat of epoxy, block sand that dry with 180 or 220 , re prime 2-3+ coats depending on how much sanding i had to do to get it straight and smooth. Final block with 600 wet and apply BC/CC. I'll also share with you the t Jun 5, 2024 · Before applying the topcoat, it is important to scuff the surface of the epoxy primer with a fine-grit sandpaper to ensure proper adhesion. If you're at this step, it means you've already finished with the coarse grit sanding. Garnet: A soft grain sandpaper best used on wood. Apr 12, 2022 · Sanding your vehicle before painting is essential, as you’ll have to apply a new coat of primer, paint, and sealant. Aug 18, 2009 · 56 posts · Joined 2009. STEP 11: Apply a coat of epoxy primer as a sealer (PPG DP Series)*. These include the 400-grit, 800-grit, and 1200-grit. primer doesn't shrink after the sanding and the scratches show again. Then, use 220-grit and cut it down with 400-grit. Shooting over cured epoxy always gives a better as sprayed gloss with no Apart from acting as a sealer to seal holes, epoxy primers also help to improve the bonding of the top coat to the bare metal. If you let that flash for about an hour or two, you have a window or three within the same day, but you could prime to 2k filler primer over it an hour after your epoxy Feb 10, 2012 · Sanding grit for 2K primer befor Epoxy. I like polyster primer for a fast build over your plastic filler followed by another two coats of epoxy, then a top coat. It comes on waterproof sheets to allow for wet-sanding. 40 to 80. Never clean metal with lacquer thinner, acetone or reducers of any kind. 4. It acts as the final primer before the application of the primer-sealer and the final paint Feb 28, 2022 · The short answer is that you don’t need to sand between coats of epoxy. For areas with deep cracking or crazing, start with 36- to 60-grit sandpaper and apply a high-solids epoxy, such as Awlgrip Hullgard. Wipe the surface, as directed above, with the specified solvent wipe, and apply the paint as directed, when all environmental conditions allow, for a thorough dry time. May 18, 2024 · The sanding process should be done using fine-grit sandpaper. In contrast to sandpapers in the 32- to 40-grit range, 80-grit sandpaper is gentler on the surface of vehicle panels. When wet sanding, you use water as a lubricant to ensure that the primer is sanded without being removed. Before painting, do one last check to make sure the surface is perfectly clean and ready: Sep 23, 2022 · I have some literature from Jon Kosmoski (founder of the House of Color), who says to wet sand the primer with no more than 400 grit. Evercoat Metal-to-Metal body filler was applied then cut down with a cheese grater, 36 then 80 grit sandpaper. Feb 18, 2023 · Primer. sand the primer with 320. Today we're sanding Doug's 1967 Jaguar 420G with a 400 grit which will be the final guide coated sand job before we unmask, remask, and spray some single sta Nov 11, 2015 · Next, go over the aluminum with 320 Grit Sand Paper on a DA Sander. Wait overnight before 2K. Apr 21, 2024 · When prepping for epoxy always sand with 80 grit DA paper for bare metal, sand with 180-320 for paint or primer. #2 · Jan 23, 2012. Jun 26, 2010 · Then sand good and re-epoxy or do body work or what ever at that point. Final sanding of the 2K primer just prior to applying the topocat paints should be done with 600 grit sandpaper. ”. Question: How deep of a scratch will a filler primer be good for? Apr 24, 2012 · jcclark said: SPI epoxy, and most others will fill 120 grit scratches easily. Jun 11, 2011 · Jun 11, 2011. I am taking somewhere in the 500 grid dry range or finer for urethanes without an epoxy prime. Featheredged areas should be final sanded with P280-P320 grade paper. This type of primer is also commonly used to cover surfaces with putty or “Bondo. The grit of paper you need to use is dependent on what type of paint your applying, for example, solvent borne Base Mar 10, 2016 · Here are six instances of when to use epoxy primer for great results. A 220-grit sandpaper is recommended as it is fine enough to smooth out the surface without damaging the primer. Sand in even strokes: Use the sanding block in a back-and-forth motion, applying even pressure. Both coatings can be sanded dry or wet. Apply Marine Epoxy Primer Seal the surface with 2-3 coats of Tuff Stuff Epoxy Primer. This will create a fresh surface for the paint to adhere to and help ensure a uniform finish. You should not need to sand the epoxy. If you are not going down to bare metal 80 grit is way too coarse for paint or gelcoat & you will have sanding scratch issues. However, if you want a super smooth finish, then you may want to lightly sand the surface before applying the second coat. At this point, I think I have enough epoxy (older than the 7 day recoat window) on the car to perform final sanding, 320 grit dry, then 400 grit dry using a hard block, and finish with P600 grit Aug 18, 2018 · All panels were sandblasted inside and out. Coarse sandpaper 40-50-grit: Used to remove old finishes and shape wood. I sprayed the entire car with Nason Select-Prime 421-19 2K urethane primer and block sanded to P400 dry. May 15, 2014 · Step #2: Primer Application. Now apply the last coat of primer. Metal must be clean of all rust, oils, and any films. You could actually see the filled 80 sanding scratches. flaking paint to bare metal is completely paint AND primer failure. Back in the day we use to sand with 150 grit before applying primer (that was 40 years ago). Yep, what he said is what I would have told you. For filler work you should start blocking it with 80 grit to level the filler, then apply guide coat and block with 180 until all of the 80 grit scratches are gone. Oct 2, 2020 · You need to cut it down with 150-grit and then, put a 2K filler primer on it. It almost never just one area. Re-prime with primer surfacer and sand with 320 or 400 grit to smooth it out. Feb 19, 2023 · In this episode, I share with you how to mix apply block and sand primer in order to prepare your primer perfectly for paint. °llllll° 1985 CJ-7. A spatula for mixing and applying epoxy putty. Bob may be using the 180 on previous coats of epoxy before applying spot filler. With the gray on black it acts as an extra guide coat besides the 3M drycoat I used. -John. Clean sanding dust. that's why the paint will chip so easily. Rinse the metal thoroughly in cold running tap water. In this vide Fine. However, before proceeding with additional layers of paint or finish, it is often Apr 14, 2005 · You NEED a good scratch for bare. Use this type of sandpaper to remove corrosion from metal. After sanding, use a blow gun to remove any dust and then wipe down the aluminum again with PRE. so yes you need to use 400 grit to sand it before painting. . Lightly sand. 100 to 150. Apr 24, 2021 · 80 grit is usually recommended for bare metal before epoxy primer. Assuming that it will be awhile before you are actually ready for that, don't forget that you'll need to scuff the epoxy primer again when you get ready to do the bodywork. Oct 3, 2023 · By MikeMcMillen October 3, 2023. I don't know how soon you are going to be doing body work and then final painting. Bond within 3 hours. Jan 3, 2007 · 2393 posts · Joined 2000. Wet sanding involves using water to soften the impact of sanding. Rub the sandpaper on the wet surface of the object (epoxy resin). Apr 27, 2022 · Extra-fine (320- and 360-grit): The first of the micro-abrasives, this is primarily for sanding finishes before polishing. You shouldnt need to seal it after that but a quick breeze over with 600 wouldnt hurt. Make sure to evenly spray each coat completely across the bare metal surface. Or you didn't need it because your surface was only lightly scratched. Method Two. Sep 17, 2013 · 4258 posts · Joined 2012. If sandpaper grit numbers are prefixed by the letter “P”, then it is considered a FEPA designation Jul 27, 2023 · You can begin with the 80-grit sandpaper before you go to a fine one like 220-grit. The best sandpaper for opening the grain of wood to accept stain, polyurethane, or paint, or for sanding hard metal like steel and concrete. is best for doing this phase? Thanks, Ken 66 Corvair Monza Mar 14, 2010 · I like 50 grit production paper, prior to filler, over epoxy for more ''tooth'', but never filler over etching primer! Anywhere you sand through to bare metal, should be reprimed with epoxy, prior to the application of filler. BIG difference between effect of 80 grit on paint & metal. However, I am seeing other web sites claiming you need to sand the final primer coat with 600-800. If the topcoat paint is a NON metallic then you can get by with 400 grit. The window of top coating Epoxy Primer is brand dependentfor example SPI's Epoxy can be top coated without sanding for 7 days, others may be as long or less, again brand dependent. Another reason you do not have to sand the epoxy primer before painting it is that the primer is very thin. '57 3200 Pickup - 305 TPI / 700R4, Restomod, Completed 10/2015, Sold 10/2020. It is a polyester-based thick substance that is typically used on fiberglass surfaces or parts. Sep 9, 2010 · useing a scuff pad to sand the primer isn't enough. and never had a problem. Jun 23, 2014 · I am redoing an entire car, which I had stripped down to bare metal, I just sprayed 3 coats of high build 2k urethane over epoxy. Super-fine (400-, 500- and 600-grit): Use this for polishing finishes on wood and metal, and to polish bare metal. 3. There are some other sites on the internet who say the same thing: wet sand with 400, then apply top coat. The final prime must be done with an fine paper to prevent sand scratches on the top coat. Spend a little extra time on any high or uneven areas. This step can be done by hand but for the best results a DA Sander should be used. Going through the sanding sticky, it seems 400 is the recommend grit to take the primer down. Degrease with denatured alcohol or acetone. Then you'll never have to sand the epoxy, which is the way they meant it to be used. If i was painting over the epoxy, then i would sand the entire car again for sure and re-apply before base. Mar 5, 2021 · How to pour water on epoxy resin: You can use foam to soak water from the container and squeeze it a little on the surface. Sanding may remove the seal that you have accomplished already by spraying. Jun 4, 2022 · Different Epoxy products and what grit to sand between coats. (2 full strength wet coats) The key is to have it cured enough before sanding that the. after all that damned work you did on the bay, take the time to sand out any hairs, dirt, fibers and whatnot so Jun 26, 2023 · Now get to work! First, lay out a large tarp or dropcloth to cover the entire work area. Go over it with lightly a red Scotch Brite pad, rewash let dry for a day or so then paint. i like to give Feb 2, 2022 · Medium: 80-Grit. These designations include those established by the Coated Abrasive Manufacturers Institute (CAMI) and the Federation of European Producers of Abrasives (FEPA). Final Inspection and Cleaning. The more you do the better, but do too much and you are just wasting your time. Please let me know if any additional info is needed. Here’s how they are best used: Flint: Use a flint grain to remove old paint or varnish or clean old products off of wood before applying a new coat of paint. This leaves no chance of rust or corrosion forming You can use a common putty or spackle to fill in such defects. Re-apply guide coat and final sand with P400 grade paper by hand and Jul 21, 2014 · 13224 posts · Joined 2008. Jul 15, 2009 · You can reduce the featherfill too. I usually scuff the primer where I will be applying Evercoat products to with 150 grit for glazing and 80 for filler. For my own piece of mind, on this project, I'm going to 600 before the reduced epoxy. Apr 20, 2011 · mike the painter. (my preferred choice is 180) Do not use a DA but just a fast sand job by hand. 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. When looking to sand a surface before applying primer, the best grit sandpaper to use is 320 to 400. #2 · Jan 4, 2007. Check the tech sheets for dry time, really depends on temp and how long it's been applied. If 320- to 360-grit sandpaper doesn’t do the trick, try using 400-grit. After reading the threads, I am worried that there is a risk of contaminating the filler underneath with moisture. Once you’ve removed the body paint, you may have to increase your sandpaper grit to May 1, 2019 · Epoxy over 80 grit. However, light streaking will still be present if you apply heavy force. Usage. You need to remember this is a spray body filler with a little polyester resin in it. I then sprayed the two front fenders, the hood and the trunk lid with Nason Ful-Poxy 491-16 Epoxy primer blocked sanded dry to P400 and wet sanded to P500 ( I am planning to spray the whole car with Oct 5, 2011 · It just needs to be scuff to help the 2K primer adhere to the epoxy. if you want to do a second coat of paint, i recommend wet sanding with 1000-1500. If it's gumming up, prob not dry. Sand to 80-100 grit. If you epoxy prime the final sand, 360 grid dry will be fine enough for urethanes. Spray a wet coat of epoxy, let flash for 30 minutes and then spray a second coat. This allows it to penetrate Dec 25, 2016 · At the moment I'm using 120 grit to remove the layers, go over it with 180 then I was thinking of finishing up with 240 grit it's not too coarse to risk the primer sinking back, and gives it enough tooth for the primer to stick too. The poly can crack when the build is too high; it's ment to be used like a glaze skim coat. I like 60 grit since it stays sharp a little longer. 2. You could do it but not really needed. Most, if not all, of the primer surfacer will get sanded off as the body is block sanded. QUOTE] Jan 11, 2021 · Before spraying epoxy over bare metal, the metal was sanded with 80 grit. See this epoxy primer I use can be sanded with 320 grit and painted over. #2 · Sep 17, 2013. kv bs nj ur hh om hg rc xs un