what grit sandpaper for plastic bumper

Start by sanding the black primer using the 500-grit sandpaper. The wifes Subaru has plastic cladding on the lower panels. For a 'V' grooved area, grind slowly using a 24 or 36 grit disc. While a lower grit such as 60 / 80 etc will work you risk gouging the surface. You will ideally start with a coarser abrasive and use progressively finer ones to achieve a smooth result. First, make sure the bumper is free of any imperfection. Step 2: Wipe down the surface with a microfiber cloth to get rid of any particles or debris. 12. These sandpapers are used for the main body work process when cutting body filler (Bondo) shaping, feathering and final sanding when prepping for paint. Fine Sandpaper/Grit Number 220400. This is where it gets fun. Also used to rough sanding of body filler. $1400. That is an excellent grit to paint your base coat and clear coat over, including enamels or anything else that youre doing. 7 Dry the bumper. Medium Grit Sandpaper/Grit Number 120180. If the lens is not scratched but only cloudy, start with 180 grit sandpaper. Take your water bottle (a bucket of soap and water works great too) and rinse off the initial white powder. If you stop there, however, you'd have visible sanding marks. When the cars bumper gets scratched or cracked, you either need to repair the bumper or replace it. Once your products arrive, its time to get to work. Then, wet sand any rough spots with 600 grit sandpaper. Wet sanding means keeping a constant layer of water underneath the sandpaper as you work - a spray bottle is all you need for effective results here. Its perfect for removing corrosion, polishing steel, or other metals but not so great on wood because of the sharp edges! This type is ideal for polishing surfaces and applying coats These coarser grades will still have an effect on the surface of your material, though it will be smoother than that of coarser paper. After the holes had been repaired I sanded the dings and gouges (and the parts I had just welded with plastic) down to a flush finish with 80 grit sandpaper and a sanding block. Supplies needed. Wet sand the parts with 400 grit wet on your rubber sanding block until smooth. If it Wipe the bumper clean and dry it with a soft cloth, then spray on a base coat layer. Follow these steps to make sure you get the best results. Sandpaper grits are categorized by how coarse the abrasive material is. Central Coast, CA. If the cabinets are particularly old or damaged, you may want to start with coarse-grit sandpaper (40-60) to remove any flaking paint or varnish. The dry sanding is suitable for both plastic and metal bumpers but more effective for metals because the other increases the chances of corrosion. Re: Wet Sanding a Plastic Bumper. A filler specifically designed for polyurethane bumpers. Never go coarser than that for scuffing to paint. This should give you a nice smooth matte black finish on the exposed plastic bumper. Plastic or fiberglass bumper repair kit (depending on the type of material used in your cars bumper) Putty knife or Bondo spreader; Sand paper (180,80, 60 grit) Tape with moderate adhesion properties. These areas are especially important to make sure the paint doesn't start lifting from these edges. Wipe the area with prep solvent, when dry. I've seen people use 80 grit - 200 grit sandpaper to remove the paint, what grit is right to use? 4. 9 Remove the dirt. This stuff does the work for you. Sand the plastic until it feels slightly rough to your fingertips. Sandpaper Selection Chart. Sandpaper grit ranges can be divided into two types: micro and macro grit sandpapers. Start with the lowest grade sandpaper first, in this case the P320 grit paper. Shake the jar of paint for about thirty seconds, then apply multiple coats of paint, about 10-12 inches away. Sandpaper sheets in medium 80 grit, Task Tools SH17080 80 Grit Signature Heavy Duty Sandpaper. Fandeli Wet Dry Sandpaper - Waterproof 400,320,220 Grit Sandpaper (25 Sheet Pack) - Professional Sandpaper for Metal, Lacquers, Wood, Glass & Plastic - Sanding Paper for All Types of Surfaces. I then took 800 grit with water and went over it. Sand the surface with 320-Grit and 500 grit sandpaper. Step 2: Wipe down the surface with a microfiber cloth to get rid of any particles or debris. Tips on Sanding Plastic Without Scratching It. ultra-fine) includes 800- and 1,000-grit paper. Sanding it down and having it painted is only $200. In the video above I show you the most common automotive sandpaper grits that are used for body and paint. This will remove any roughness from the surface of the cabinets without taking off too much material. Polishing rags (microfiber works best.) INSTRUCTIONS: First, make sure the bumper is free of any imperfection. Rubbing alcohol, and abrasive cleaner or stripper. The kit contains pre-measured packets of epoxy resin and hardener, along with 80, 180 and 320-grit sandpaper, spreaders and fiberglass screen mesh. Use a Scotchbrite pad. It is coarse and will be able to cut through the thickest layers of clear coat. -500-grit sandpaper -Abrasive pad (Scotch-Brite) -Surface cleaner -Clean cloth. Create V-shaped grooves. Ideal for color sanding to a glass smooth finish. Medium: 80-Grit. Sandpaper is labeled on the back with the grit size. You have to use special primer on plastic prior to paint. If you desire to get a rougher surface as an end result you may be using near to 30 grits. Available in waterproof and non-waterproof sheets. The grit you need depends on what you plan to do, as removing rust requires a different grit than stripping all the paint from the body of your car. And for a slightly smoother surface use the macro grit grading near 80 grits. Didn't use anything 'special' for plastic, just the 'normal' products. It may take two or three rounds of pencil marks with the coarsest sandpaper to make the board flat. If Features : Package include: 36 pieces high grit sandpaper assortment in grit 3000, 5000, 7000 and 10000, 9 pieces for each grit. If the plastic is especially dirty, use a solution of water and vinegar (1:1) with a gentle cloth. Take your 80-grit sandpaper and vigorously sand the surface. You should paint over 400-grit. Wet or Dry Grits For wet or dry sanding. 80 grit Used to strip paint from metal. To correct minor surface choppiness and create a uniformly smooth surface for painting, wet sand the whole bumper using 600-grit sandpaper. CAMI is used mainly in North America and FEPA in Europe. In the video above I show you the most common automotive sandpaper grits that are used for body and paint. These sandpapers are used for the main body work process when cutting body filler (Bondo) shaping, feathering and final sanding when prepping for paint. Begin wet sanding with sandpaper of moderate coarseness, with a grit between 180-600. Spray a heavy wet coat; wait about 20 seconds for the solvents to disolve or emulsify any contaminants, then wipe with a clean paper towel. Step 6. Black Body filler (for deep scratches.) Fine grit, wet, and that will get into the crevices and holes better than sandpaper will. Be sure to use the wet sanding technique for best results. 1500 to 2000 Grit When you need to smooth out surface imperfections and scratches before and after applying the clear coat, this is the grit range to use. This will also require the wet sanding technique to prevent clogging the sandpaper. If you encounter any bumps, cloudiness, or "cat" scratches, just wait five minutes, sand again until smooth, and try again. If you dont have any sandpaper, you could also use non-gel toothpaste to buff the area. 7. If your bumper is the type that powders when sanded, cut the grooves using a 24-grit disc attachment on a sander. When sanding a softer surface, such as plastic, you may need to start with a higher grit size, such as 120, to avoid excessive scratching. Abrade the ABS to promote adhesion by lightly sanding it. 5 Sand the surface if needed. However, light streaking will still be present if you apply heavy force. Start with 40 or 60 coarse-grit sandpaper to rub the cracked area until it smoothes. Plastic Welder, INSOUR Plastic Welding Machine Car Bumper Repair Kit, Hot Stapler with Pliers, Flat/Outside Corner/Inside Corner/Wave Staples, Carry Case, Sandpaper. Medium-grit sandpaper (around 60-80) will suffice for most projects. Then use a "self etching" primer to prime over it. 80 and 40-grit sandpaper for stripping. EXPERT. Bumper scratches can be an eyesore on your car but with the right method and a bit of patience you can fix the problem yourself. turns rust into some other inert substance. Black Body filler (for deep scratches.) Rubbing alcohol, and abrasive cleaner or stripper. Medium Coarse Sandpaper. Step 4 I Re: Wet Sanding a Plastic Bumper. Medium Coarse Sandpaper. HMAC300. If I did it this way, it would be over $800. You really want to get scratches into the chrome. mix master mark's Profile; E-mail mix master mark; Settled In. Sand the entire lens with 80 grit sandpaper using a dual action sander. Step 1: Lightly rub the scratched area with 3,000 grit sandpaper. Repairman sanding plastic car bumper. Step 3 Wet sanding with 800-2500 grit sandpaper. A - complete bumper repaint, B - refinishing bumper and complete bumper (this is for dents in bumpers, plastic cracks or holes) C - spot paint repair (this is for minor scratches in corner, bottom lip or side of a bumper, near an edge of a panel or below a body line). 424. Five grits from fine 180 to ultrafine 1500 should handle most any repair. Plastic Bumper Repair: For the original story, go to PopularMechanics.com We've all been there --hastily putting the car in reverse, failing to check the blind spot, and cringing at the crunch of bumper meeting barricade. Go over the surface again with 80 grit sandpaper to bring the rest of the surface down to the low spot. Emery. Bill. I use 180 to 220 to start, then work up from there typically to 320. In contrast to sandpapers in the 32- to 40-grit range, 80-grit sandpaper is gentler on the surface of vehicle panels. 500-grit sandpaper; Abrasive pad (Scotch-Brite) Surface cleaner; Clean cloth. 5.0 out of 5 stars 2. 4 Warm the bumper. Wet sanding with this waterproof sandpaper cleans the grit and washes away debris as you work, leaving a smoother finish in less time than dry sanding alone. 3 Remove the bumper if you want to. Remove bumper paint first. INSTRUCTIONS: 1. Alternatively, you may stick to 60 or 80 grit sandpaper on the orbital sander or belt sander and achieve the same results. Also a good wipe down with alcohol or acetone to clean before paint goes a long way towards a cleaner painjob. That said, she got a couple of road booboos some time back on these plastic areas. After epoxy has set up for the required time 24 hours (min) -48 hours (better) then apply your choice of either conventional glaze or a bumper specific product like UPOL Stronghold. As such, 80-grit can be applied to the hood, roof or door panels of a car or van without leaving rough streaks. Work in a dry and warm place for better curing of the adhesive. There are two ways to approach this. To paint a bumper, start by removing the plastic bumper cover and washing it thoroughly with degreaser and water. Top. Utility blades. The grit of sandpapers is a rating of the size of abrasive materials on the sandpaper. Didn't use anything 'special' for plastic, just the 'normal' products. 4. Flint is a natural, heat-resistant rock thats perfect for removing old varnish or paint. 1000 to 1200 Grit When you need to remove base coat imperfections, this grit range will do the job. Sand just a little off the grain now. Sanding my plastic bumper. 6 Wash the bumper. Posted by 5 years ago. Sand the surface with 320-Grit and 500 grit sandpaper. The most common grits are 60-80 (extremely coarse), 100-150 Sanded, reshot the base and clear and finished if off just like metal. Close. If your surface is an intricate design, you are better advised to use medium course grade to protect the carved design beneath the paint. I've searched and read most of the plastic bumper prep threads, but I have an odd twist: 600 grit wet sandpaper instead? The natural grain of this sandpaper will leave your metal shiny and smooth. Clean the plastic with a Polyvance plastic cleaner. Sanding helps open the wood grain to absorb stain or paint better. 180 grit A finer grit used to final sanding and feather edging body filler. This means that 40-grit sandpaper is very rough, but 4000-grit sandpaper is incredibly fine. The best way to paint over chrome is sand it with about 120 grit sandpaper. Get everything corrected then re-prime with epoxy after applying adhesion promoter again over any bare plastic areas exposed during the sanding process. Load a palm sander with 300-grit sandpaper. Wipe with damp cloth (water), wipe dry, paint with bed liner or whatever .If you ever build anything out of bare metal, welded or not you just cannot get every place sanded, and sand blasting is too much $$$ and time. The 600 pretty much just takes out the scratches that was left by the 400 grit. If it isnt the case, fix them using body filler. It will probably take two coats to restore contour properly. Because plastic scratches easily, coarse sandpaper grits aren't recommended. Also, when do I use body filler? Lower grit numbers represent coarser abrasives that scrape off materials much quicker. The dry sanding is suitable for both plastic and metal bumpers but more effective for metals because the other increases the chances of corrosion. Or, use a cordless drill and a rotary file if your plastic bumper is the type that smears. 1 Tools you need to paint plastic bumper. 2. The purpose of dry sanding is to take off the rough, caked on substances. WARNING: Be very careful when polishing plastic bumper caps, plastic mirrors and anywhere with a raised edge But I'm afraid of scuffing up the bumper with sandpaper and doing a crappy job But I'm afraid of scuffing up the bumper with sandpaper and doing a crappy job. So after the initial P180/P240 sand, I'd do another pass with P320 grit, and then another pass with P400 grit, and then another pass with an even higher grit, say P600 or P800. Advertisement Step 3 Wipe down the ABS with a tack cloth. If you dont have a power sander, you can do it by hand. After sanding, the prior paint to dull and isopropyl alcohol to clean the bumper, use a tack cloth to pick up any small residue. Wet sanding slowly levels out the surface of the plastic with a bit more force than toothpaste or baking soda, making it ideal for deeper scratches. Itll just take a little longer. Remove the plastic piece from your car's bumper. Lauren - A new bumper would be $550, I would have to pay a shop to have it fit and prep for the Saleen pieces are horrible fitment right out of the factory. That said, she got a couple of road booboos some time back on these plastic areas. Sandblast everything with 80 grit aluminum oxide. After the base coat dries for 30 minutes, wet sand any new imperfections with 1500 grit sandpaper. However, any cracks or splits should be repaired from the front and back. Finer grits like 1200, 1500, 2000, and 3000 is used for finishing. If you dont have any sandpaper, you could also use non-gel toothpaste to buff the area. 8 Inspect the bumper. 5. Automotive touch up paint!!LINK!! Archived. Do not touch the surface directly with bare fingers because the skin becomes soft during the washing procedure. Auto Body and Paint Sandpaper Grit Breakdown. Lets start with the heavy duty grits and what theyre used for. 32 and 40 grit sandpaper can be used for sanding and grinding paint down to metal. It will allow you to cut out old body filler or shape new filler if you have some extremely high areas in your bodywork. Medium coarse sandpaper is graded between P80 and P180 on the grit level and offers a good level of paint removal, which is less likely to destroy the underlying surface. If youre using medium grits for smooth wood surfaces, remember to use gentle strokes! Do not touch the surface directly with bare fingers because the skin becomes soft during the washing procedure. For auto repair and other metals, start with 60-grit paper if you need to sand down below the rust to repair deep scars. In rare cases, you may also need to use extra coarse sandpaper (16 to 24 grit) where you may want to quicken the task. Bill. Mikerocosms said: . You can use 400 if you wet-sand carefully. We Come To You Remove the plastic trim completely or tape off the sections of restoration How To Paint Plastic Car Parts (using aerosol bumper paint) Learnautobodyandpaint I used an Armour All product that worked nicely on the all areas but soon wore off after several hard rains and about 2 months Whether its your iPod, mobile phone or computer, scratches on You can actually go even more coarser if youre doing a single stage enamel. When youre done, use the abrasive pad and sand the bumper once again. ScratchLeveler or 2000 grit sandpaper.!!LINK!! Sanded, reshot the base and clear and finished if off just like metal. AM. Medium coarse sandpaper is graded between P80 and P180 on the grit level and offers a good level of paint removal, which is less likely to destroy the underlying surface. Was this. 500 and 600-grit sandpaper for finishing. Some people even paint over 280 grit-sanded surfaces. The higher grit number is equivalent to a finer abrasive, which creates smoother surface finishes. 2. Clean the plastic with a detergent solution. Leave it to cure, then took 120 grit and rubbed it flat. Sandpaper is great at scratching the clear coat off your car bumper. 2 Steps to paint plastic bumper. It is recommended to start at the low grit end and work your way up to 800 grit. Scuff with either 320 or 400 grit prior to primer then rescuff with 400 after primer. 3. Step 1: Lightly rub the scratched area with 3,000 grit sandpaper. Then increase the grit to 120 to remove rust stains or shape body filler. 500 and 600-grit sandpaper for finishing. High-quality black bumper polish. Right down to the bare urethane, but no bumper damage whatsover. (To continue) -> Clean after moving up to different grit sandpaper. This 5-pack of Task Signature Heavy Duty Sandpaper has a significantly longer lifetime during rough usage than any competing sandpaper for both hand and machine sanding. Sandpaper Grit Ranges . It can be used for pre-primer sanding, rough primer sanding, fine sanding spot putty, and final body filler sanding. It is recommended to use a sanding block too. 600 to 800 Grit This sandpaper grit range is perfect for sanding surface imperfections in the primer, prior to paint application. Price: $4.95. Tip: When fiberglass bumpers crack, they will leave fiberglass hairs visible along the edges of the cracked area. It is recommended to use a sanding block too.600 to 800 Grit This sandpaper grit range is perfect for sanding surface imperfections in the primer, prior to paint application. If your plastic bumper has scuffs and scratch damage, the repair can be carried out just on the front side of the bumper. Step 2 - Sand. Follow these steps to make sure you get the best results. Cleaned the area, applied plastic filler slightly proud of the bumper. Get it as soon as Tue, Jul 26. Sand with the help of 80 grit paper around the damaged area. The wifes Subaru has plastic cladding on the lower panels. Step 5. The coarsest grade, designated as extra-coarse, includes 24-, 30- and 36-grit paper. Sand and contour plastic body filler with 80- and 120-grit, then finish with 400-grit waterproof sandpaper on a rubber block. For example, you could use 20 to 50 grit sandpaper for the first pass and finish with 60 to 80 grit sandpaper for the final pass on an orbital or belt sander. If there is a P in front of the grit number, for example, P300, then you know it follows the FEPA grading system. UPDATE: Wet sanding and buffing resprayed bumper.. Looks much better! metal, has been providing quality power tool accessories. 80 and 40-grit sandpaper for stripping. Once the paper starts feeling like it is sliding off the plastic easily, move on to 600 grit. Flint. AUSTOR 36 Pieces Wet and Dry Sandpaper 3000 5000 7000 10000 Grit Sanding Paper Assortment 9 x 3.6 Inch Abrasive Paper Sandpaper for Automotive Sanding Wood Furniture Finishing. If your surface is an intricate design, you are better advised to use medium course grade to protect the carved design beneath the paint. When choosing sandpaper, its important to select the right grade for the job. Step 4. Understanding your options will ensure you always know which one to choose for a perfect finish. Using the fine-grit sandpaper, sand the primer with light pressure until it feels smooth. After this I skimmed the entire bumper with filler. Utility blades. If there are still a few little imperfections, dry the parts off well and lay another coat of the Hydroflex onto the parts. The best strategy is to begin wet sanding with 220-grit sandpaper and make additional passes with progressively finer paper until you're happy with the appearance. Clean with scuff pad, rinse with water and then dry. Sand the primer with 300 grit sand paper. Thats where the 3M Bondo Bumper Repair Kit comes in. Once your products arrive, its time to get to work. To sand them smooth your better off starting with a higher grit sandpaper. The stone chips were skimmed. STEP 4: Wet sand for deeper scratches. mix master mark. Dont use Aircraft stripper on those Urethane/Plastic parts or you will be in a world of hurt. UPDATE: Wet sanding and buffing resprayed bumper.. Looks much better! If all of the defects are completely gone, switch to 600 grit, and sand it again. If you sanded straight down the plastic, to your hand about 10 degrees and sand with the 400. While cars equipped with plastic bumpers are liable and tend to get cracks even in small accidents. A filler product!!LINK!! Posts: 67 Joined: Thu Sep 17, 2015 6:20 pm Location: Edmonton, Alberta, Canada Country: Canada Posted: Wed Sep 30, 2015 3:30 pm Once all the pencil marks disappear on a single pass, it's time to switch to a medium grit sandpaper. The finest grade (i.e. answer. High-quality black bumper polish. Follow these methods to sand plastic the right way and avoid scratching it as you do it: Utilizing a detergent solution, thoroughly clean the plastic.If the plastic is very grimy, try cleaning it using a solution consisting of equal parts water and vinegar with a soft cloth.Start the wet sanding process with sandpaper that has a moderately coarse grain and a grit that ranges Wait a day and finish the parts off with the 600 grit wet. Polishing rags (microfiber works best.)

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