Sofia Martinez
Saturn's plastic body panels are known for their dent resistance and ability to withstand the test of time, with many older models still boasting rust-free bodies. While the plastic panels have their advantages, some car enthusiasts believe they don't look as appealing as traditional metal panels, and the plastic underneath the paint can be vulnerable to damage. Painting Saturn's plastic body panels requires a specific process, and the company has outlined four levels of damage that can occur to its composite plastic panels, each requiring a different approach.
How to paint Saturn plastic body panels
| Characteristics | Values |
|---|---|
| Damage levels | Level 1: paint scratches, Level 2: gouge in the plastic, Level 3: crack or puncture, Level 4: severe or multiple damage locations |
| Repair process | Clean the panel, sand the panel, use an air gun to remove dirt, apply paint, use epoxy and urethane-based plastic fillers, sand again, apply a clear coat |
| Benefits | Dent-resistant, rust-resistant, easier to replace |
| Considerations | Plastic is easily damaged, may look like a cheap toy |
| Paint matching | Send a paint sample to the manufacturer, or use a pre-painted auto body part |
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What You'll Learn
Clean the panel with a wax and grease-removing solvent
To clean the panel with a wax and grease-removing solvent, you will need to first wash the damaged panel and the surrounding areas with detergent and water. Rinse thoroughly and let the panel dry. Then, clean the panel with a wax and grease-removing solvent. This is an important step to ensure that the panel is free of any wax or grease that may interfere with the paint adhesion.
It is important to choose a suitable wax and grease-removing solvent that is compatible with the plastic material of the Saturn body panels. You can refer to the manufacturer's recommendations or seek advice from automotive experts or body shops.
Once you have selected the appropriate solvent, follow the instructions on the product label for safe and effective use. Typically, you will need to apply the solvent to a clean cloth and then wipe down the panel thoroughly. Ensure that you wear gloves and eye protection during this process to avoid any contact with the chemicals.
After cleaning the panel with the solvent, it is crucial to allow sufficient time for the panel to dry completely before proceeding to the next step, which may involve sanding or painting, depending on the repair level required. Refer to the repair guidelines provided by Saturn or seek professional advice if you are unsure about the subsequent steps.
By thoroughly cleaning the panel with a wax and grease-removing solvent, you will ensure that the surface is properly prepared for the upcoming repair and refinishing processes, helping to achieve a high-quality and long-lasting paint finish on your Saturn plastic body panels.
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Sand the panel with #400 sandpaper
Sanding is an important step in the process of refinishing and repainting Saturn plastic body panels. The recommended sandpaper grit size for this task is #400, which strikes a balance between effectively smoothing the surface and preserving the integrity of the plastic.
Start by inspecting the body panel for any damage or imperfections. If there are deep scratches, gouges, or cracks, it is important to address them before proceeding with the sanding process. Depending on the extent of the damage, you may need to follow specific repair procedures outlined by Saturn, such as those for Level 2 or Level 3 damage, which involve filling and reinforcing the affected areas.
Once the panel is ready for sanding, ensure that the surface is clean and free of any debris or residue. You can use a wax and grease remover to ensure the panel is thoroughly cleaned. When sanding, apply even pressure and work in a consistent direction across the entire panel. It is important to avoid over-sanding, as this can damage the plastic and affect the overall structure of the panel.
The #400 sandpaper will help create a slightly roughened surface, which is crucial for the subsequent application of primer and paint. This process is known as scuff-sanding and helps create a stronger bond between the paint and the plastic surface. Make sure to sand the entire panel, paying extra attention to areas that may have been repaired or filled.
After sanding, it is essential to remove any sanding residue. Use a clean cloth or air gun to wipe down the panel, ensuring that all dust and particles are eliminated. This step is crucial for ensuring a smooth and professional finish. Once the sanding and cleaning process is complete, you can move on to the next steps of the refinishing process, such as applying primer and the desired colour coat.
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Apply the colour coat
To apply the colour coat to your Saturn's plastic body panels, you will need to follow a few important steps to ensure a smooth and even finish. Here is a detailed guide:
Firstly, it is crucial to prepare the surface properly. This involves scuff-sanding the panel with #400 sandpaper, which will create a slightly rough texture that promotes better paint adhesion. Ensure you sand the entire panel, creating a uniform surface for the paint to adhere to.
Next, clean the sanded panel with a suitable solvent to remove any wax or grease. This step is important as it ensures that the paint will properly bond to the plastic surface. Once cleaned, be sure to wipe the panel dry with a clean cloth.
Now, you are ready to begin applying the colour coat. Select a paint that is specifically designed for use on plastic car surfaces. It is recommended to choose a high-quality paint designed for automotive use, ensuring a durable and long-lasting finish. Apply the paint using a spray gun, following the manufacturer's instructions for the correct application technique and drying time.
When applying the colour coat, work in thin, even layers, ensuring full coverage. Multiple thin coats are better than one thick coat, as this reduces the risk of drips and runs. Allow each layer to dry completely before applying the next, following the recommended drying time from the paint manufacturer.
Finally, once you have achieved the desired colour and coverage, finish the paint job with a clear coat. This step is essential, as it will protect the colour coat from the elements and ensure its longevity. The clear coat will also provide a glossy shine to your Saturn's body panels, giving it a professional and showroom-ready appearance.
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Featheredge paint around repair
To featheredge paint around a repair, you must first understand the process of feathering or feather edging. This technique is used to prevent a rough edge from forming between layers of paint. It is a process that can be done by hand but is extremely time-consuming and requires a lot of elbow grease. The process involves using sandpaper to remove the existing coat of paint and corrosion. This can now also be done with power tools, such as a Certified Cold Work Grinder, which reduces the time and effort required.
When featheredging around a repair, the aim is to create a smooth transition and adhesion of the paint among substrates. This technique is recommended for Level 2 damage repairs, which include cosmetic damage, minor scratches, and gouges.
The process begins by cleaning the repair area with soap and water and then following up with an isopropyl cleaner. The area should then be dried with a clean, dry rag. Next, a 1&1/2" taper should be ground around the damaged area using a grade 80 sandpaper on a D-A sander. For deep gouges, a grade 36, 3-inch disc should be used first, followed by the grade 80 sandpaper.
After this, the featheredging process can begin. Using grade 180 sandpaper with a D-A sander, featheredge the paint around the repair. This will help to create a seamless blend between the new and existing paint, ensuring that the repair is not noticeable.
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Clean the panel with R-M 901 Pre-Paint Cleaner
To clean the panel with R-M 901 Pre-Paint Cleaner, start by sanding the entire panel with 240-grit sandpaper. This will help create a smooth and even surface for the paint to adhere to. Once you've finished sanding, use a clean, dry cloth to wipe down the panel and remove any dust or debris.
Next, apply the R-M 901 Pre-Paint Cleaner to a clean cloth and wipe down the entire panel. Follow the instructions on the product and ensure you are in a well-ventilated area. This product will remove any sanding residue, grease, or wax from the panel, ensuring the paint will properly adhere to the surface.
It is important to follow the instructions on the R-M 901 Pre-Paint Cleaner and to wear the appropriate protective gear, including gloves and eye protection. Work in a well-ventilated area to avoid inhaling any fumes.
Once you have applied the cleaner, use a fresh, clean cloth to wipe down the panel again, ensuring that all residue is removed. Allow the panel to dry completely before moving on to the next step, which may include applying a primer or the paint itself, depending on the specific instructions for your paint product.
Additionally, it is important to note that while R-M 901 Pre-Paint Cleaner is recommended by Saturn, an equivalent product may also be used if necessary. However, it is always best to refer to the specific instructions provided by the manufacturer of your chosen paint product to ensure compatibility and proper preparation of the plastic body panel.
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Frequently asked questions
For light scratches, you can simply refinish the paint. However, for deeper scratches, you will need to sand the area, clean it with soap and water, and then use a plastic filler before refinishing the paint.
Clean the area with soap and water, then use a grade 36, 3-inch disc followed by grade 80 sandpaper. After that, use an epoxy or urethane-based plastic filler and then refinish the paint.
For a crack or puncture, you will need to reinforce the plastic, fill it, and then refinish the paint.
Wash the panel with detergent and water, then clean it with a wax and grease-removing solvent.
Painting Saturn plastic body panels can improve the aesthetic of the car, which some people believe looks like a "cheap toy." Painting these panels can also help to protect the plastic from scratches and other damage.
