Every now and then I'd dry off the surface to see how it looked. This is to replace the orange peel with finer and finer scratches, which will eventually be filled in with polish. When you apply spray paint too fast, too heavy, too cold of a climate or too humid of an atmosphere, you can get sags in your paint. As you work away from the damage make your sanding … If you find the coarse attachment cutting too hard, switch to a lower grade, but make sure the entire surface has been cut to the same level. Avoid overheating the surface when you are buffing it or you may damage the base coat. Scratches that don't extend through to the base coat can usually be removed by sanding, but you must take care not to remove too much of the clear coat, or you'll compromise its ability to block UV rays. Most factory paint jobs can handle a repaint with out stripping the entire car to the metal. Do not spend too much time in one area; you need to take off only the clear-coat layer. just fix the dents , 320 the car to prime, water sand with 400 to 600 grit . Sanding and polishing clear coat overspray, The center channel stand I made had a lot of strange angles and surfaces, which made painting without overspray very difficult. The result (especially with a clear coat) is a dull and speckled surface rather than a smooth glass finish. You can perform wet sanding once or refine the enamel with successive sanding. How to Glue a Wood Frame to the Surface of a Mirror, How to Use Water Based Paint or Lacquer on Furniture, Auto Detailing Network: Wet Sanding Using a Powerful Yet Dangerous Tool, Auto Detailing Network: What You Should Know About Clear Coat, How to Remove a Surface Scratch From a Stainless Steel Grill, How to Level a Floor That Bows at the Joints. To achieve a glossy shine on the car, you have to remove the orange peel by sanding the clear coat. If you decide to repaint the wood surface, you can smooth it out using a medium grade sandpaper such as 120-grit. As a landscape builder, he helped establish two gardening companies. It’s important to start over with a base coat for the new urethane to bond properly. If you're sanding out a scratch in the finish, move the paper at a 45-degree angle to the scratch. It took a long time to get to this point and there is so much left to do. If you apply the right primer for the job, this is all the surface prep you need. Share it with us! If you find damage, use 400-600 grit sandpaper and an orbital sander to wet-sand off all of the old clear-coat. Remove the sandpaper from the water and wrap it around a sanding block. Wet the area you're going to sand by spraying water from a spray bottle. It is often a step in polishing cars and other items. Did you make this project? 4 The skills and supplies needed to wet sand your enamel paint job are few, so don't be intimidated. You can repair some clear coat damage by using a degreaser to remove any wax that might be present on the vehicle. This occurs because the underlying layers have not fully flashed, which means the solvents in the paint have not had a chance to reach the surface and allow the paint to dry. Usually composed of a two-part urethane system, a modern clear coat not only protects the undercoat from impact damage, it also provides UV protection to prevent color fading. Clean the clear coat with trisodium phosphate or an environmentally sensitive alternative labeled as a TSP substitute. When I wet sand, I like to add a few drops of soap to the water in order to allow the sandpaper to glide more easily over the surface and not grab as easy, biting into the paint. The important thing here is to go slow and not burn through the clear coat. © Copyright 2020 Hearst Communications, Inc. The sanding steps help diminish the clear coat until the entire surface is smooth. The clear says it should flash for 25 minutes. How long do you have to wait for the spray paint to cure enough to start wet sanding? Sand by applying a firm, steady pressure to the sanding block and moving in straight lines so you can see the sanding scratches. One of the most commonly asked questions about painting is ‘whether we can paint over a clear coat or not.’ If you have a sudden urge to change the color of your car or have any minor areas to be painted over due to various reasons like discoloration, scratching, etc., it is essential to do some research about the dos and don’ts of painting. Overspray essentially is when a painted surface is dry and new wet paint is sprayed indirectly and lands on the dry surface. We’re now going to sand it all down with 400-grit, get all the minor imperfections with glaze putty. Once you have gone over the surface, switch to a finer grade such as 180-grit and go over the surface again. You can sand for adhesion and spray a new coat of clear over the base, but it will never lock in, and it will always sit on top of the old clear at the edges. Spread polish on the area you sanded and buff it up with a buffer fitted with a wool or foam pad to restore the shine. Wrap the wet sandpaper in the sanding block and begin sanding the surface using a slightly firm back and forth motion. You should go about an inch past the clear coat damage. Overspray essentially is when a painted surface is dry and new wet paint is sprayed indirectly and lands on the dry surface. This will help you distinguish the sanding scratches from the one you are trying to remove. Thanks for the article. Add Tip Ask Question Comment Download. Design and 3D Print a Modern and Cozy Reading Light! Soak a sheet of 1200-grit wet/dry sandpaper in water for 10 minutes. Ideally you don't want to disturb the base at all, just clear right over it. Also, be sure to add a pump or two of liquid soap in your water bottle to help glide over the surface. Their service centre provides end to end services in terms of painting, polishing, repairing modifying, and maintaining the vehicle. Soak a sheet of 1200-grit wet/dry sandpaper in water for 10 minutes. When you are done, the surface will have a uniformly dull, chalky appearance. Now, let’s talk about Wet Sand & Dry Sanding Techniques When Prepping for Base Coat Painting. You don't even need to sand off the Dupli-junk clear coat. Then take painters tape and tape off the area where you will be working. Start by liberally spraying an area a couple of square feet in size with your water-filled spray bottle. Reply To sand a clear coat, start by soaking some sandpaper in water for 1 hour to soften the edges so they don’t scratch the coat. Move up to 800 grit sandpaper, and then 1,000 grit, and finally 1,200 grit. When the water begins to turn milky, stop sanding, wipe off the surface and dry it with a blow-dryer. The goal is to try and not go beyond the primer layer. Wipe on a TSP solution, then allow it to sit for about five minutes before rinsing it off. I just had a thread on that a few days ago. Then, wrap a sheet of the wet sandpaper around a sanding block and sand your car in small sections. You need to wet sand clear coats with very fine sandpaper. So, I've been working on the final stages of the center channel stand I'm making for my Definitive Technology CS-8080HD center channel unit and I paid the price by rushing. The surface … Although it can be time consuming, color sanding will give your car a mirror-like finish. Automobile manufacturers have been clear-coating since the 1950s, but modern clear coats are harder and thinner than the original lacquer finishes. I'll show you how to sand and buff the clear coat back to a shine. 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