3D printing technology, also known as additive manufacturing, is a versatile and rapidly evolving field that can transfer digital design into tangible products and accomplish tasks in various fields. 3D-printed objects often come out in a single color or a basic filament color, which may not be visually appealing for certain projects. Can you paint 3D printed items? Of course. Painting is a good way to conceal flaws and make your creations more visually attractive.

So, how to paint 3D prints? While 3D printing is widely applied in manufacturing and healthcare to art and education, individual users are still new to it, let alone painting techniques. That's why we're here to guide you through the process of painting 3D prints, equipping you with the knowledge and skills to transform your 3D prints from plain to visually stunning. Let's get started!

Materials and Tools Needed for 3D Prints Painting

Before we go over how to paint 3D prints, it's essential to gather the right materials and tools. Equipping yourself with the following items will ensure a smoother painting process:

• Sandpaper:For smoothing surfaces (various grits: 200-2000).

• Primer:The best primer for 3D prints creates a smooth, uniform base that helps paint adhere better and prevents issues like peeling and uneven colors.

• 3D Print Paint:Acrylic paints are the best paint for 3D prints due to their versatility and quick drying time. You can paint PLA with it. Other options, like watercolors or oils, can suit specific needs.

• Brushes:For detailed painting, you can prepare a variety of paintbrushes, including fine detail brushes for intricate work and larger brushes for broad strokes.

• Masking Tape: For protecting areas you don't want to paint.

• Sealer (Clear Coat): Adds protection and shine to the finished print.

• Gloves and Drop Cloth:To keep your hands and workspace clean.

• Respirator Mask:Essential for protecting yourself when working with primers, sealers, or paints that emit fumes.

• Airbrush (Optional): For smooth and professional finishes.

How to Paint 3D Printed Figures: Step-by-Step

Now that you have all the necessary tools and materials ready for painting your 3D printed miniatures, let's proceed with how to paint a 3D printed object.

Step 1. Remove Raft or Support Material

How to prep 3D prints for paint? The first crucial step is to remove any raft or support material left from the 3D printing before sanding and painting 3D prints.

1. Inspect the Print: Carefully inspect your 3D print for these structures, which are used to support overhanging sections during printing.

2. Detach with Tools: Using pliers or appropriate tools, gently detach these elements, ensuring not damaging the main print.

Step 2. Smooth 3D Prints

Advanced 3D printers like the AnkerMake M5 3D Printer, with its precise ±0.1 mm detail and double cooling fan, help minimize layer lines, reducing the time and effort needed for post-print smoothing. However, for a perfect finish, follow these steps:

1. Start with Coarse Sandpaper:Use sandpaper of various grits, starting with coarse grits (e.g., 200-400) and gradually moving to finer grits (e.g., 800-2000).

2. Sand Carefully:Gently sand the entire surface, paying extra attention to areas with visible imperfections. For a more efficient smoothing process, consider using sanding blocks, which provide stability and even pressure.

3. Clean the Surface:After sanding, wipe the prints clean to remove dust and debris for a pristine surface ready for painting.

Read this guide to discover more ways to smooth your 3D prints.

Step 3. Add Primer for 3D Prints​

Once your 3D prints are smoothed to your satisfaction, start to apply a primer. Primer serves as a critical foundation for your paint, enhancing adhesion and ensuring an even, consistent finish.

1. Choose the Right Primer:Select a primer compatible with your paint and suitable for your 3D print material to ensure optimal adhesion and durability.

2. Prepare the Workspace:Work in a well-ventilated area or wear a respirator mask to protect yourself from fumes. Lay down a drop cloth to keep your workspace clean.

3. Apply the Primer:Spray or brush the primer in thin, even coats using light, overlapping strokes. Cover the entire surface of the print without creating thick layers, which could lead to drips or runs.

4. Let It Dry:Allow the primer to dry thoroughly, following the manufacturer's recommended drying time. Proper drying is crucial for a smooth painting process.

Step 4. Paint Your 3D Prints

With your 3D print primed and ready, it's time to bring it to life with paint. Painting is where your creativity shines, but precision is key for a professional finish. Here's the best way to paint 3D prints:

1. Choose the Right 3D Printer Paint: What paint to use on 3D prints? Select acrylic paint for most 3D prints, as it works well with materials like PLA, ABS, and resin. For a smoother finish or special effects, you can spray paint 3D prints.

2. Apply Thin Layers: Start with a base coat by applying thin, even layers of paint. Avoid overloading the brush or airbrush to prevent drips or uneven texture. Let each layer dry completely before applying the next.

3. Focus on Details:Use smaller brushes for intricate sections, such as facial features or fine patterns. For gradient effects or blending, an airbrush is ideal.

4. Layer and Blend Colors: Gradually add layers to build depth and richness. Use light colors to highlight and darker tones to add shadows, enhancing the 3D effect.

5. Dry Between Coats:Allow sufficient drying time between coats to avoid smudging or mixing colors unintentionally. Reference the paint manufacturer's instructions for optimal drying times.

Step 5. Seal 3D Prints After Painting

Sealing your painted 3D print ensures the paint's durability and provides a polished finish. This step also protects the model from wear and environmental factors.

1. Select a Clear Coat:Choose a clear sealer based on your desired finish-matte, satin, or glossy. Spray-on sealers are recommended for even application.

2. Apply Thin Coats:Hold the spray can or airbrush 6-8 inches away from the model and apply thin, even layers. Avoid heavy applications that could create drips or bubbles.

3. Polish Between Coats:After each layer of clear coat, lightly polish the surface with a fine polishing cloth for a smooth, professional finish.

4. Let It Cure:Allow the sealed print to cure for at least 24 hours. For optimal durability, some enthusiasts recommend waiting up to a week for full hardening.

Essential Painting Tips for 3D Printing

Aside from the step-by-step guide, we've also covered some tips for 3D printing. Following these tips will help you better know how to paint 3D prints.

1. Prepare Your 3D Print:Before you start painting 3D prints, make sure your 3D print is clean and free of any debris, dust, or residue. You can use isopropyl alcohol and a soft brush to clean the surface.

2. Thin Your Paints: If you're using acrylic paints for 3D prints, thin them with a bit of water or acrylic medium. This will make it easier to apply thin, even coats and reduce the risk of brush strokes.

3. Use Multiple Coats: It's often better to apply several thin coats of paint rather than one thick coat. This helps to prevent paint build-up, dripping, and obscuring fine details.

4. Allow Proper Drying Time:Allow each coat of paint to dry thoroughly before applying the next one. This may take anywhere from 15 minutes to several hours, depending on the type of paint and environmental conditions.

5. Masking: If you have multiple colors or want to protect certain areas from paint, use masking tape or liquid masking fluid to cover those areas before painting.

6. Touch-Up: If you make a mistake or need to fix imperfections, you can always touch up the paint. Just make sure the previous layers are completely dry before applying the new paint.

7. Safety Precautions: When using spray paints or paints that emit fumes, work in a well-ventilated area and wear appropriate safety gear such as a respirator or mask.

8. Clean Your Tools:Clean your brushes, airbrushes, and other painting tools immediately after use to prevent paint buildup and maintain their longevity.

Conclusion

Painting 3D prints is a rewarding way to enhance their appearance and durability. By following these steps on how to paint 3D prints-removing supports, smoothing surfaces, priming, painting, and sealing-you can achieve stunning results. Remember to use high-quality paint for 3D printed parts, work in a well-ventilated area, wear a mask for safety, and clean your tools after use to maintain their quality. With the right techniques and care, your painted 3D prints will stand out with professional-grade finishes.

Common FAQs about How to Paint 3D Prints

How long will the 3D prints paint dry?​

The drying time for paint on 3D prints varies based on factors like paint type, layer thickness, and environmental conditions. Acrylic paints dry quickly, often within minutes, while oil-based paints can take hours to days. Thicker paint layers dry more slowly than thin ones. Additionally, low humidity and high temperatures speed up drying, but proper ventilation in the workspace is also crucial for quicker drying.

What kind of paint do you use on 3D prints?

For painting PLA, acrylic paints are the best choice due to their versatility and ease of use. The best paint for PLA 3D prints includes spray paints and airbrush options for smooth finishes. For painting resin 3D prints, use high-quality acrylics or enamels, ensuring proper priming for durability and vibrant colors.

Can I paint 3D prints without sanding?

It is not recommended as the surface of 3D prints often exhibits some imperfections, such as roughness and unevenness. However, if you wonder how to paint 3D printed objects without sanding, a high-build primer can help mask imperfections. Moreover, printers like the AnkerMake M5, with its precise ±0.1 mm detail, produce smoother prints, reducing the need for extensive sanding and making it easier to achieve a polished finish with minimal effort.

How to paint 3D prints to look like metal?

To paint a 3D printed model look like metal, start by priming the print with a dark base coat, like black or gray. Use metallic paints or rub-on metallic wax for the finish. Apply thin layers evenly and buff for shine. Seal with a clear coat for durability and a polished metallic effect.