Chloe Zhang
Painting plastic motorcycle fairings is a great way to customise your bike and save money. It is a meticulous process that requires preparation and patience. To achieve a professional finish, you need to clean the fairings, sand them, apply a primer, spray the base colour, and finish with a clear coat. This introduction will cover the steps and tips for preparing plastic fairings for spray painting.
How to Prepare Plastic Fairing for Spray Paint
| Characteristics | Values |
|---|---|
| Purpose | To improve a bike's aerodynamics, performance, and aesthetics |
| Preparation | Clean the fairings, remove dirt, grease, and old paint |
| Tools | Sandpaper, primer, spray paint, gloves, brush, cleaning solution, cloth, hair dryer, spray gun, hardener, clear lacquer, paint defect removing polish, surface polisher |
| Process | Sand the fairing, apply primer, spray base colour, wet sand, apply additional colour coats, apply clear lacquer, polish |
| Safety | Wear gloves and an air-purifying mask, ensure proper ventilation |
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What You'll Learn
Clean the plastic fairings with soapy water and a brush or sponge
To prepare plastic fairings for spray painting, it is important to start with a clean surface. This will ensure that the paint adheres properly and that your final paint job looks neat and professional.
Before you begin cleaning, remove the fairings from the motorcycle and place them in a well-ventilated open space. If your fairings are brand new and have not been attached to the motorcycle, you can skip this step. However, if they are already installed, be sure to unscrew all the bolts attaching the fairings to the motorcycle body. It is also a good idea to cover the rest of the motorcycle with a tarp to protect it while you work.
Now, you can start cleaning the plastic fairings with soapy water and a brush or sponge. Mix ordinary dish soap with hot water in a bucket. Dip your brush or sponge into the soapy water and use it to clean the fairings. Use a circular scrubbing motion for the best results. Make sure to clean all the parts of the fairing thoroughly to remove any grime, debris, or dirt.
After scrubbing, rinse off the fairings with clean water to remove any remaining soap or residue. You can use a microfiber cloth to wipe down the fairings and ensure that all the dirt and soap have been removed. Allow the fairings to air dry completely before proceeding to the next step.
It is important to wear gloves while cleaning to protect your skin from any irritation or rashes that may be caused by the cleaning solution. Additionally, always read the instructions and safety precautions on any cleaning products you use.
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Sand the fairings with sandpaper to remove the shine and create a smooth texture
To prepare plastic fairings for spray painting, you must sand the fairings with sandpaper to remove the shine and create a smooth texture. This is an important step as the gloss will prevent new paint from sticking to the fairing, and the paint may start to peel from these areas.
Firstly, clean the fairings with soapy water to remove any dirt from the surface. Then, dry the parts with a rag and check for any leftover grease or dirt. Once the fairing is clean and dry, sand it with 400-grit sandpaper to remove the lacquer shine. Next, use 800-grit sandpaper to remove any old paint, gloss, and create a smooth texture to apply new paint. This process will improve the adhesion between the paint and the surface and ensure a sophisticated finish.
After sanding, use a blower or a brush to remove any leftover dust. It is important to ensure that all dust and plastic particles are removed before proceeding to the next steps of priming and painting.
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Apply a coat of primer and let it dry
After sanding the plastic fairing, you will need to apply a coat of primer and let it dry. The primer is essential as it ensures the paint will stick properly to the fairing. Without it, you may find that the paint chips off easily.
Before applying the primer, make sure you have properly cleaned the fairing. You can use hot soapy water and a sponge to clean the fairing, using a circular scrubbing motion for the best results. Once the fairing is clean, dry it with a rag and check for any leftover grease or dirt.
Now you are ready to apply the primer. You can buy plastic primer at any paint supply store, and it usually comes in rattle aerosol containers. Spray the primer so that the surface is covered in a smooth, consistent layer. Spray it in long, even strokes across the surface, refraining from ever stopping in a particular spot to avoid build-up. You can also use a spray gun for this step. If you are using a spray gun, you will first need to mix the primer with the correct proportion of hardener and pour the mixture into the spray gun.
Once you have applied the primer, you will need to let it dry. The drying time can vary depending on the product used, but it is generally recommended to allow the primer to dry for at least 2 to 6 hours before moving on to the next step.
After the primer has dried, you can apply a thin coat of your base colour. Don't worry about covering the primer completely, as this will allow you to easily see any bumps or flaws that may still remain on the fairing.
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Spray the base colour in thin coats, allowing drying time in between
When you are ready to spray the base colour, start by spraying the base paint underneath the fairing, then go around to cover all the edges. Use a spray gun with a 1.4 mm thick nozzle to apply two coats with 15-minute breaks in between. These breaks will allow the primer to harden enough so the next coat will settle over it. If you leave it for less than 15 minutes, the second coat will run over the first layer and create uneven thick patches. If you wait longer than 15 minutes, the two layers of undercoat won't combine properly. Once both coats are applied, leave the second coat of primer to dry before rubbing the fairing lightly with 600-grit paper or a Scotch Brite.
After applying all the coats, wait 6 to 8 hours for the paint to fully dry. You can speed up the drying process by using a hairdryer.
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Apply a clear coat for protection and gloss
Once you have applied the base colour coat to your plastic fairings, you will need to apply a clear coat for protection and gloss. This will protect your new paint job from extreme weather conditions and add a glossy finish. Here is a step-by-step guide to applying a clear coat:
Clean the Surface
Start by wiping the surface of the plastic fairings with a good cleaner, such as PRE Paint Prep, and a lint-free rag. This will help remove any oils, dirt, or debris that may have accumulated during the painting process. It is important to ensure that the surface is clean and free of any contaminants before applying the clear coat.
Abrade the Surface
Lightly abrade the surface of the plastic fairings using a scuff pad or fine-grit sandpaper. This will create a slightly rough surface for the clear coat to adhere to. Be careful not to scratch the surface too aggressively, as you do not want to damage the underlying paint.
Apply Light to Medium Coats First
When applying the clear coat, start with light to medium coats. Do not apply the clear coat too heavily at first. You can gradually build up the thickness of the coats, allowing each coat to dry before applying the next. This will help you achieve a smooth and even finish.
Use a Flex Agent for Flexible Plastics
If the plastic fairings are made of extremely flexible plastic, consider adding a small amount of flex agent to the last coats of clear coat. These additives are designed for clear coats sprayed through a paint gun and need to be mixed according to the manufacturer's instructions. Always test the clear coat on a small area first to ensure you are happy with the results.
Allow Adequate Drying Time
After applying the final coat of clear lacquer, allow ample time for it to dry completely. Wait at least 24 hours before reassembling the fairings or using the vehicle. This will ensure that the clear coat is fully cured and hardened, providing maximum protection and gloss.
By following these steps, you can effectively apply a clear coat to plastic fairings, protecting your paint job and adding a glossy shine to your vehicle. Remember to work in a well-ventilated area and wear appropriate protective gear, including a respirator, when applying the clear coat.
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Frequently asked questions
First, remove the fairings from the motorcycle and set them in an open space. Clean the fairings with soapy water and a brush or sponge to remove any dirt, grease, or debris from the surface. Once the fairings are clean and dry, sand them with 400-grit sandpaper to remove the lacquer shine and any old paint, creating a smooth texture for the paint to adhere to. Then, apply a thin coat of primer and let it dry.
Apply 3 to 5 thin coats of your chosen colour, leaving a drying interval of around 2 to 3 hours between each coat. After the final coat, wait 6 to 8 hours for the paint to fully dry.
After the final paint layer, apply 2 to 3 coats of a clear lacquer for protection and gloss. Allow 2 hours of drying time between each coat of lacquer.
Always wear an air-purifying mask and gloves while painting, and ensure there is plenty of ventilation in your workspace. Cover the walls of your work area with plastic sheets to protect them from paint.
