Alexei Volkov
Spray painting plastic toys can be a fun way to give them a new lease of life. However, it is important to be cautious when spray painting, as the fumes and overspray can be harmful. It is best to work outdoors, lay down a protective sheet, and ensure the area is well-ventilated. Before painting, the plastic surface should be thoroughly cleaned with soap and water, and any build-up removed with rubbing alcohol. When it comes to the paint itself, there are a variety of options available, including water-based, solvent-based, and lacquer paints. Lacquer paints are toxic, so extra care must be taken when using them. It is advisable to use a respirator mask and ensure adequate ventilation. Additionally, a primer is usually required when painting plastic to ensure the paint adheres properly. Once the primer is dry, the toy can be spray-painted with thin, even coats, holding the can 8-12 inches away and tilting it down at a 45-degree angle. Allow each coat to dry thoroughly before applying the next, and remember to shake the can occasionally to keep the paint mixed. With these tips, you can transform those worn-out plastic toys into something fresh and exciting!
Spray Painting Plastic Toys with Lacquer-Based Paint
| Characteristics | Values |
|---|---|
| Best location for spray painting | Outside |
| Surface preparation | Clean with soap and water, or rubbing alcohol if there is build-up; sand with fine sandpaper |
| Primer | Use a plastic-specific primer; spray in thin, even coats in a zig-zag pattern; allow to dry |
| Spray paint application | Hold the can 8-12 inches away from the toy, tilt down at a 45-degree angle, and spray in light coats |
| Drying and curing | Allow each coat to dry thoroughly; wait several days to a week or more for the paint to fully cure before use |
| Finishing | Sand lightly with fine sandpaper to smooth out rough spots; wipe with a dry and then wet cloth |
| Safety | Avoid spray paint contact with skin; use a respirator mask and ensure proper ventilation when spraying |
| Paint type | Acrylic lacquer paints are durable, fast-drying, and can be used as primers; water-based paints are also available |
| Paint selection | Choose non-toxic, toy-safe paints; check for certifications (e.g., EN 71 in Europe, ASTM F963 in the US) |
| Alternative methods | Brush-on paints and non-toxic wood toy paste are options for those who prefer not to spray paint |
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What You'll Learn
Prepare your work area and the toy
Spray painting plastic toys with lacquer-based paint can be done in a few simple steps. Firstly, you will need to prepare your work area and the toy itself. Here is a step-by-step guide to help you get started:
Prepare your work area:
It is important to find a well-ventilated area to work in, as spray paint fumes can be dangerous to inhale. If possible, take your project outdoors, ensuring the temperature is mild, there is no precipitation, and it is a calm day. The ideal temperature range for spray painting is between 64 and 77 degrees Fahrenheit (18 to 25 degrees Celsius), and the ideal humidity is between 40% and 50%. If you cannot work outside, a shed or garage is a good alternative. Make sure to open windows and doors to ventilate the space, and avoid turning on any fans as they will blow the paint around.
To protect the surrounding area from overspray, lay out a large drop cloth or a piece of cardboard, and place your toy in the centre. You can also lay down newspaper over the cloth to catch any excess paint. If you are working on a smaller project, you can create a simple spray paint booth using a box and some scissors. This will help protect your work area and the toy from dust and dirt.
Prepare the toy:
Before you start spray painting, ensure your toy is clean and dry. For small toys, fill a sink with warm water and add a teaspoon of liquid dish soap. Use a cloth to wash the toy. For larger toys, use a bucket and soak a sponge or cloth in the soapy water to clean the toy. This will remove any dirt, grime, or mould from the toy's surface.
Once the toy is clean, you can lightly sand it to ensure the paint adheres properly. You can use a damp rag to wipe down the toy, and if there is any mould or mildew, use an all-purpose or sanitizing cleaner and allow it to dry completely. If you are using a new toy, you can wipe it down with mineral spirits or rubbing alcohol to break down any sealants.
Now you are ready to start spray painting! Remember to always follow the instructions on your spray paint can, and work in a well-ventilated area to protect yourself from fumes.
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Choose the right primer
When it comes to choosing the right primer for spray painting plastic toys with lacquer-based paint, there are a few important considerations to keep in mind. Firstly, it is essential to select a primer that is specifically designed for use on plastic surfaces. This ensures that the primer will effectively adhere to the plastic and provide a suitable base for the lacquer-based paint.
There are a variety of primers available in the market that are suitable for plastic. One option is to use a plastic-specific primer, such as the Plastic Primer mentioned in some sources. This type of primer is designed to work on all types of plastics, except polycarbonate plastics, as they may react with the paint. While this particular primer is not toy-safe, it can be used for outdoor toys or items that are not intended for direct contact with children.
Another option for a primer is the BIN Advanced Shellac-Based Primer, which is water-based, or its counterpart, the BIN Shellac-Based Primer, which is alcohol-based. These primers are suitable for use under latex paints and can bridge the gap between a plastic surface and your chosen lacquer-based paint. However, it is important to note that the alcohol-based version has a high VOC (volatile organic compound) content due to the ethanol present in it.
If you are looking for a non-toxic and toy-safe option, there are primers available that meet these criteria. For example, Annie Sloan's clear lacquer is toy-safe, but it requires a longer curing time of about two weeks. Additionally, there are water-based spray paints available that are certified toy-safe, such as the Pintyplus Evolution Water-based paint, which is also suitable for use on toys, crafts, and decor items.
When choosing a primer, it is also essential to consider the type of lacquer-based paint you will be using. For instance, if you plan to use acrylic lacquer paints, you can use the same acrylic paint as a primer since it chemically etches itself into the plastic surface. Tamiya Acrylics, for instance, are a popular choice for hand-brushing and can produce unique effects.
Lastly, when preparing plastic toys for spray painting, it is crucial to clean the surface thoroughly with soap and water to remove any build-up. Using sandpaper to roughen the surface can also enhance the adhesion of the primer. Remember to always follow the manufacturer's instructions and safety guidelines when working with primers and paints to ensure a safe and effective painting process.
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Spray paint techniques
Prepare the Work Area:
Spray painting is best done outdoors to ensure proper ventilation and avoid inhaling fumes. Choose a well-ventilated area or set up your workspace outside. Lay down a tarp, plastic sheet, or cardboard to protect the surface from paint. Check the paint can for temperature requirements to ensure optimal conditions for the paint to set properly.
Clean the Plastic Surface:
Thoroughly clean the plastic toy with a sponge, soap, and water to remove any dirt, dust, or buildup. This step is crucial as any residue can reduce the adhesion of the paint to the surface. If there is stubborn buildup, use rubbing alcohol to wipe down the surface before painting.
Sand the Surface:
Lightly sand the plastic toy with fine sandpaper to create a rough surface. This step helps the primer and paint adhere better to the plastic. Make sure to sand in a single direction, creating a smooth and even finish. Remove any dust particles with a dry cloth after sanding.
Apply Primer:
Use a plastic-specific primer and apply it in thin, even coats. Spray the primer in a zig-zag pattern, moving in one direction without going back over sprayed areas. Allow the primer to dry completely according to the manufacturer's instructions. This step ensures better adhesion of the paint to the plastic surface.
Spray Paint Technique:
Hold the spray paint can 8-12 inches away from the toy and tilt it down at a 45-degree angle. Spray light coats of paint in the same zig-zag pattern, always moving in one direction. Avoid spraying too closely to prevent drips and uneven coverage. Allow each coat to dry completely before applying the next. It is recommended to use thin coats and build up coverage gradually to achieve a smooth finish.
Cure and Final Touches:
Allow the paint to cure for several days, especially if it is a toy that will be handled frequently. Once the paint is completely dry, use extra-fine sandpaper to gently smooth out any rough spots by sanding in a light circular motion. Wipe away the paint dust with a dry cloth, followed by a damp cloth.
Remember to always shake the paint can occasionally during the process to keep the paint mixed evenly. Additionally, always test spray on a separate item first to ensure the paint is mixed well and spraying smoothly. By following these techniques, you can achieve a professional-looking finish on your plastic toys.
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Drying and curing time
Drying refers to the evaporation of solvents in the paint, resulting in a hardened paint film. Lacquer paints typically dry within 24 hours, and you can even apply multiple coats within a single day. The fast-drying property of lacquer paints is due to the use of strong organic solvents, which require caution and adequate ventilation during application.
On the other hand, curing refers to the complete cross-linking and hardening of the paint film, which can take significantly longer. Curing times for lacquer paints can range from a minimum of 7 to 14 days or even longer, depending on factors such as temperature, humidity, and the number of coats applied. It's important to follow the manufacturer's instructions for curing times, as insufficient curing can affect the durability and quality of the finish.
When it comes to painting plastic toys, the curing time is crucial to ensure the safety of the toy for children's use. Some paints, like Annie Sloan's clear lacquer, recommend a curing period of 14 days to be considered toy-safe. Other water-based spray paints, like Pintyplus Evolution, suggest a full cure time of one week to be safe for everyday use.
It's worth noting that the curing process can be influenced by the application method as well. For example, when using a brush or roller, the curing time may be different from that of spray-applied lacquer paints. Additionally, the use of a primer or the need to sand between coats can also impact the overall curing time. Therefore, it's always advisable to refer to the manufacturer's guidelines and recommendations for specific curing times and safety precautions.
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Finishing and maintenance
Once you have finished spray painting your plastic toys, there are a few steps you can take to ensure the paint job is durable and long-lasting. Firstly, allow the paint to dry thoroughly. You can use a hairdryer to speed up the drying process, but be careful not to dry it too quickly, or the paint may bubble. After the paint is dry, you can lightly sand the surface with fine sandpaper to remove any imperfections and create an even smoother finish. If you are using a water-based paint, make sure the humidity is not too high during the curing process, and always allow enough time for the paint to fully cure before using the toy. This can take several days to two weeks, depending on the type of paint used.
To protect your paint job and ensure its longevity, consider applying a clear coat or sealer on top of the paint. This is especially important if the toy will be exposed to water or stains. You can use a natural wax, such as a non-toxic, food-safe wax, or a synthetic clear coat. Some clear coats, like lacquer, will also need time to cure. You can also use a polyurethane spray-on clear coat for a natural finish. Apply several light coats, allowing each coat to dry thoroughly before applying the next.
To maintain your spray-painted plastic toys, it is important to keep them clean and free of dirt, grease, or other debris. Use a mild cleaner and a soft cloth to wipe down the toys regularly. If the paint starts to show signs of wear, such as cracking or flaking, you may need to reapply paint and clear coat. Always store the toys in a cool, dry place and avoid exposing them to extreme temperatures, as plastic is prone to expanding and contracting, which can cause the paint to crack or flake.
By following these finishing and maintenance steps, you can ensure that your spray-painted plastic toys look great and last for a long time.
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Frequently asked questions
It is recommended to use a water-based spray paint that is low odour and can be sprayed directly onto plastic. For example, Pintyplus Evolution Water-based paint is suitable for painting toys and is certified in Europe and the US.
It is important to clean the plastic toy before painting to ensure the paint will adhere to the surface. Use a sponge, soap and water to clean the toy and remove any build-up. If there is significant build-up, use rubbing alcohol to wipe down the surface. It is also a good idea to sand the toy with sandpaper to create a rough surface for the paint to adhere to.
Spray painting should be done outside to avoid fumes and overspray. Place the toy on a flat surface, such as cardboard or a tarp, and use painter's tape to cover any areas you don't want to paint. Spray the toy with thin, even coats of primer, holding the can 8-12 inches away and tilting it down at a 45-degree angle. Allow the primer to dry, then spray the toy with your chosen colour, using the same technique.
