what grit sandpaper for plastic bumper

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If your surface is an intricate design, you are better advised to use medium course grade to protect the carved design beneath the paint. The higher grit number is equivalent to a finer abrasive, which creates smoother surface finishes. Also, when do I use body filler? Follow these steps to make sure you get the best results. Scuff with either 320 or 400 grit prior to primer then rescuff with 400 after primer. Rubbing alcohol, and abrasive cleaner or stripper. Step 1: Lightly rub the scratched area with 3,000 grit sandpaper. Sandpaper Grit Ranges . 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. $1400. Clean the plastic with a Polyvance plastic cleaner. Get it as soon as Tue, Jul 26. There are two ways to approach this. And for a slightly smoother surface use the macro grit grading near 80 grits. Thats where the 3M Bondo Bumper Repair Kit comes in. AM. 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 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. 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. You should paint over 400-grit. 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. Create V-shaped grooves. Step 2 - Sand. Wet sand the parts with 400 grit wet on your rubber sanding block until smooth. Itll just take a little longer. These areas are especially important to make sure the paint doesn't start lifting from these edges. 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. While a lower grit such as 60 / 80 etc will work you risk gouging the surface. Central Coast, CA. Price: $4.95. Then increase the grit to 120 to remove rust stains or shape body filler. That is an excellent grit to paint your base coat and clear coat over, including enamels or anything else that youre doing. After this I skimmed the entire bumper with filler. Remove the plastic piece from your car's bumper. 5. 9 Remove the dirt. I use 180 to 220 to start, then work up from there typically to 320. Sanded, reshot the base and clear and finished if off just like metal. As such, 80-grit can be applied to the hood, roof or door panels of a car or van without leaving rough streaks. Ideal for color sanding to a glass smooth finish. You have to use special primer on plastic prior to paint. You really want to get scratches into the chrome. 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. Emery. If you sanded straight down the plastic, to your hand about 10 degrees and sand with the 400. Lower grit numbers represent coarser abrasives that scrape off materials much quicker. If you desire to get a rougher surface as an end result you may be using near to 30 grits. Sanding it down and having it painted is only $200. I Sand the plastic until it feels slightly rough to your fingertips. Re: Wet Sanding a Plastic Bumper. If youre using medium grits for smooth wood surfaces, remember to use gentle strokes! Step 2: Wipe down the surface with a microfiber cloth to get rid of any particles or debris. 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. If you encounter any bumps, cloudiness, or "cat" scratches, just wait five minutes, sand again until smooth, and try again. Sand the primer with 300 grit sand paper. This means that 40-grit sandpaper is very rough, but 4000-grit sandpaper is incredibly fine. A filler product!!LINK!! This is where it gets fun. Start with the lowest grade sandpaper first, in this case the P320 grit paper. It will probably take two coats to restore contour properly. If your surface is an intricate design, you are better advised to use medium course grade to protect the carved design beneath the paint. The 600 pretty much just takes out the scratches that was left by the 400 grit. This should give you a nice smooth matte black finish on the exposed plastic bumper. Re: Wet Sanding a Plastic Bumper. Once your products arrive, its time to get to work. It may take two or three rounds of pencil marks with the coarsest sandpaper to make the board flat. To sand them smooth your better off starting with a higher grit sandpaper. Take your 80-grit sandpaper and vigorously sand the surface. When choosing sandpaper, its important to select the right grade for the job. Begin wet sanding with sandpaper of moderate coarseness, with a grit between 180-600. Sand the surface with 320-Grit and 500 grit sandpaper. Cleaned the area, applied plastic filler slightly proud of the bumper. Right down to the bare urethane, but no bumper damage whatsover. If it Automotive touch up paint!!LINK!! Black Body filler (for deep scratches.) Tips on Sanding Plastic Without Scratching It. Get everything corrected then re-prime with epoxy after applying adhesion promoter again over any bare plastic areas exposed during the sanding process. When youre done, use the abrasive pad and sand the bumper once again. Sandpaper Selection Chart. Sandblast everything with 80 grit aluminum oxide. A filler specifically designed for polyurethane bumpers. Alternatively, you may stick to 60 or 80 grit sandpaper on the orbital sander or belt sander and achieve the same results. 80 and 40-grit sandpaper for stripping. Do not touch the surface directly with bare fingers because the skin becomes soft during the washing procedure. Advertisement Step 3 Wipe down the ABS with a tack cloth. Didn't use anything 'special' for plastic, just the 'normal' products. 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. Abrade the ABS to promote adhesion by lightly sanding it. If you stop there, however, you'd have visible sanding marks. Sanded, reshot the base and clear and finished if off just like metal. Sandpaper is labeled on the back with the grit size. High-quality black bumper polish. 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. Tip: When fiberglass bumpers crack, they will leave fiberglass hairs visible along the edges of the cracked area. 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 To paint a bumper, start by removing the plastic bumper cover and washing it thoroughly with degreaser and water. Never go coarser than that for scuffing to paint. Polishing rags (microfiber works best.) Remove bumper paint first. 4 Warm the bumper. Wet or Dry Grits For wet or dry sanding. While cars equipped with plastic bumpers are liable and tend to get cracks even in small accidents. Posted by 5 years ago. If all of the defects are completely gone, switch to 600 grit, and sand it again. 80 and 40-grit sandpaper for stripping. Medium Grit Sandpaper/Grit Number 120180. Clean the plastic with a detergent solution. I've seen people use 80 grit - 200 grit sandpaper to remove the paint, what grit is right to use? Features : Package include: 36 pieces high grit sandpaper assortment in grit 3000, 5000, 7000 and 10000, 9 pieces for each grit. answer. Utility blades. 1000 to 1200 Grit When you need to remove base coat imperfections, this grit range will do the job. Sanding my plastic bumper. 2 Steps to paint plastic bumper. 500-grit sandpaper; Abrasive pad (Scotch-Brite) Surface cleaner; Clean cloth. The coarsest grade, designated as extra-coarse, includes 24-, 30- and 36-grit paper. ScratchLeveler or 2000 grit sandpaper.!!LINK!! Mikerocosms said: . Also used to rough sanding of body filler. However, any cracks or splits should be repaired from the front and back. 500 and 600-grit sandpaper for finishing. 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). 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. Go over the surface again with 80 grit sandpaper to bring the rest of the surface down to the low spot. mix master mark's Profile; E-mail mix master mark; Settled In. UPDATE: Wet sanding and buffing resprayed bumper.. Looks much better! Bill. Start by sanding the black primer using the 500-grit sandpaper. 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. Work in a dry and warm place for better curing of the adhesive. Shake the jar of paint for about thirty seconds, then apply multiple coats of paint, about 10-12 inches away. If it isnt the case, fix them using body filler. Sandpaper grit ranges can be divided into two types: micro and macro grit sandpapers. 4. Bill. turns rust into some other inert substance. 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. CAMI is used mainly in North America and FEPA in Europe. 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.

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