Most 3D printed parts come out looking a bit plain. The default filament color isn’t always exciting. And if your model has layer lines or small flaws, it might need more than just sanding.

So can you paint 3D printed items?

Absolutely. Painting is one of the easiest ways to turn basic prints into eye-catching models. It helps cover imperfections and adds a creative touch, especially on PLA 3D prints.

In this guide, we’ll show you exactly how to paint 3D prints step by step, from prepping the surface to sealing the finish. 

And here's the fun part: we’ll also share a trick for adding full-color designs straight onto your prints.

Let’s walk through it together.

What You Need to Paint 3D Prints

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 Prints: 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 Support Material

Let’s start with cleanup. Most 3D printed parts come off the printer with supports, rafts, or brims. You’ll want to get rid of those first.

Use pliers or a hobby knife and gently work around the supports. If a section looks fragile, take it slow. It’s better to spend a few extra minutes than accidentally snap off part of your model.

Step 2. Smooth 3D Prints

Now that the structure is clean, it’s time to deal with the layer lines.

Start sanding with a rough grit like 200 or 400, then gradually move up to finer grits like 800 or even 2000.This helps you get a smoother finish, especially on rounded edges and detailed features.

PLA prints in particular benefit from careful sanding, it makes a huge difference when it comes time to paint.

Here’s a tip:Wipe the surface clean between sanding stages using a lint-free cloth or isopropyl alcohol. That way, you’re not just pushing dust around.

Step 3. Add Primer for 3D Prints

Priming is key. It gives your paint something to grip and helps even out the surface, especially if your print still has small flaws. Spray-on primers made for plastic work best, and they dry quickly.

Hold the can 6 to 8 inches away from the model and spray in short, light bursts.

Don't try to cover everything in one pass. Let each layer dry before adding more. Usually, 2 to 3 coats are enough.

Once it's fully dry, your part is now paint-ready.

Step 4. Paint Your 3D Prints

For this step, 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

After all that work, you’ll want to protect the finish.

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.

7 Essential Painting Tips for 3D Printing

• Clean before painting– Wipe your model with isopropyl alcohol to remove dust and oils.
• Thin your paints– Mix with water or a medium for smoother layers.
• Multiple coats– Always better than one thick coat.
• Use masking– Helps when painting in sections or with different colors.
• Dry fully between layers– Avoid smudging and color bleeding.
• Work in fresh air– Especially when spraying anything.
• Clean your tools– Keeps brushes and airbrushes in good shape for next time.

The New Way to Add Color to 3D Prints

Now here’s a new and easy way to add color to your 3d prints: UV printing on 3d prints.

Instead of painting everything by hand, you can use a UV printer to add full-color designs directly onto your 3D printed parts. It’s fast, sharp, and doesn’t require any brush skills.

We’ve tried this on flat 3D prints like signs, tags, and tiles, and the results are impressive.

For example, we recently printed a Minecraft cube using PLA and added all six sides with eufyMake E1 UV printer. It is very easy and the color is vibrant.

Here is a short video showing exactly how we did it. If you’ve ever wanted an easier way to decorate your prints, this might be your new favorite method.

Final Thoughts

Painting is more than just a finishing touch. It’s what makes your 3D printed part feel complete.

Whether you’re hand-painting a detailed figure or trying out UV printing on PLA parts, there are so many ways to bring your model to life. 

Start with good prep, take your time, and explore different styles until you find what works for you.

Common FAQs about How to Paint 3D Prints

How long does paint take to dry on 3D printed parts?

Acrylic paint usually dries in 15 to 30 minutes. If you apply thicker layers, or use oil-based paints, drying may take longer. Always check the label.

What kind of paint should I use for PLA 3D prints?

Acrylic paint works best. It sticks well, dries fast, and is easy to layer. Spray paint and airbrush paints are also great options for larger or smoother prints.

Can I paint 3D prints without sanding?

Technically yes, but you won't get a smooth finish. Sanding removes print lines and improves the overall look. If you really want to skip it, use a filler primer to help hide roughness.

How do I paint a 3D print to look like metal?

Start with a black primer. Then layer on metallic acrylics like silver or bronze. For extra depth, dry-brush lighter highlights and seal it with a gloss top coat.