3D printing has opened the doors to endless creativity, allowing makers, hobbyists, and professionals to turn digital models into physical objects. But a raw 3D print—especially those made with PLA or ABS—often looks plain, dull, or unfinished. This is where painting 3D prints becomes a game-changer. A beautifully painted model can transform a simple print into a stunning, professional-quality piece of art.

Whether you’re a miniature artist, DIY hobbyist, or someone offering 3D printing services, learning how to paint your 3D prints will take your work to the next level. In this in-depth guide, you’ll learn how to prepare, paint, finish, and seal your 3D prints like a pro.

Let’s dive into the complete process of painting 3D prints and explore tips, techniques, and tools that will boost the beauty and durability of your creations.

✅ What Does Painting 3D Prints Mean?

Painting 3D prints refers to the process of applying color and surface finish to models produced through 3D printing. Since most 3D prints come out with visible layer lines and irregular textures, painting helps to:

• Improve appearance

• Cover imperfections

• Add realistic details

• Enhance durability

• Create custom designs

Whether you’re painting cosplay props, action figures, models, or decorative items, the painting process brings them to life.

✅ Why Painting 3D Prints is Important?

Painting does more than just make a print look good. It plays a big role in:

1. Improving Visual Appeal

Raw 3D prints look plastic-like and unfinished. Paint adds life, personality, and depth.

2. Adding Professional Finishing

Painted models look more polished, which is important for businesses selling custom items.

3. Enhancing Details

A painted 3D print highlights small textures, grooves, and patterns.

4. Increasing Durability

A sealed, painted model can resist scratches, water, and sunlight better.

5. Offering Customization

Paint lets you create unique designs not possible with filament color alone.

✅ Types of Paint for 3D Prints

Choosing the right paint is key to achieving the best results. Here are the most commonly used paint types:

1. Acrylic Paint

• Most popular choice

• Water-based, safe, and easy to clean up

• Fast drying

• Ideal for beginners and experts

2. Spray Paint

• Great for smooth and even coating

• Works well for large models

• Available in matte, satin, gloss, and metallic finishes

3. Airbrush Paint

• Provides extremely smooth results

• Best for detailed models

• Used in professional miniature painting

4. Oil Paint

• Longer drying time

• Good for weathering and realistic effects

• Not ideal for beginners

For most people, acrylic and spray paint are the best options to start with.

✅ Tools You Need for Painting 3D Prints

To paint your 3D models professionally, you’ll need the right tools:

• Primer spray

• Sandpaper (100–400 grit)

• Acrylic paints

• Paintbrushes (fine + medium)

• Airbrush (optional)

• Masking tape

• Clear sealer/varnish

• Gloves and a dust mask

• Soft cloth for cleaning

• Filler putty (for smoothing imperfections)

Investing in good tools makes a big difference.

✅ How to Prepare 3D Prints Before Painting

Preparation is the most important step. If your base is not smooth, the paint won’t look good. Follow these steps:

1. Remove Supports

Carefully remove support structures using pliers or cutters. Avoid damaging the model’s surface.

2. Sand the Model

Sanding removes layer lines and gives a smooth surface.

• Start with 100 or 150 grit

• Move to 220 grit

• Finish with 400 grit

Wet sanding gives even better results for PLA and ABS.

3. Fill Gaps and Imperfections

Use:

• Wood filler

• 3D print filler spray

• Automotive putty

Apply filler on deep layer lines or scratches.

4. Wash the Model

Before priming, wash your model with:

• Mild soap and water

This removes oils and dust, helping the primer stick better.

How to Prime 3D Prints

Primer is essential because it:

• Helps paint stick

• Reveals imperfections

• Makes colors vibrant

Steps:

1. Shake primer can well

2. Spray lightly (short bursts)

3. Rotate the model and repeat

4. Let it dry for 30–60 minutes

5. Re-sand areas if needed

6. Apply a second coat

A smooth primer coat = a smooth paint finish.

Step-by-Step Guide to Painting 3D Prints

Now comes the fun part—painting your model. Follow this step-by-step process for the best results.

1. Base Coat

Start with a base coat using:

• Spray paint

• Acrylic

• Airbrush

This sets the main color tone.

2. Add Layers

Build depth by adding multiple thin layers. Thick layers create drips and uneven texture.

Tips:

• Let each layer dry completely

• Add shadows, highlights, and textures

• Use small brushes for details

3. Dry Brushing Technique

Dry brushing helps highlight raised surfaces and textures.

Steps:

1. Dip the brush in the paint

2. Wipe most off

3. Lightly “brush” edges

This gives a natural, realistic look.

4. Wash Technique

Washing is applying diluted paint to fill crevices, giving depth and shadow.

Use it for:

• Faces

• Clothing

• Armor

• Mechanical parts

It creates a weathered, detailed look.

5. Blending Colors

Use acrylic paints or an airbrush to blend colors for smooth transitions. This is great for miniatures, creatures, and props.

6. Adding Fine Details

Use a tiny brush to paint eyes, textures, text, lines, or patterns.

This step brings your model to life.

✅ How to Seal 3D Prints After Painting

Sealing protects your model from:

• Scratches

• Fading

• Water damage

• UV exposure

Types of Sealers:

1. Matte varnish (most realistic)

2. Gloss varnish (shiny, plastic look)

3. Satin varnish (balanced look)

Spray sealers give the smoothest finish.

Tips for Getting Professional Results

Here are expert tips to level up your painting:

✅ Paint in thin layers
✅ Always use primer
✅ Sand between coats
✅ Don’t rush drying time
✅ Use good-quality paint
✅ Mix your own unique colors
✅ Use masking tape for clean lines
✅ Try weathering for realistic effects
✅ Practice blending and shading

The more you practice, the better your results will be.

Common Mistakes to Avoid

New painters often make these mistakes:

❌ Painting without priming
❌ Using thick paint layers
❌ Not sanding enough
❌ Rushing the process
❌ Wrong type of paint
❌ Overhandling the model
❌ Painting in humidity or dust

Avoid these, and your results will improve instantly.

Best Ideas for Painting 3D Prints

If you’re looking for inspiration, here are some creative ideas:

• 3D printed anime figures

• Superhero miniatures

• Cosplay props (swords, helmets, armor)

• Monster models

• RC car bodies

• Home decor items

• Metal-effect objects

• Mini toys and collectibles

You can create amazing effects with the right colors and techniques.

Painting 3D Prints for Business

If you’re selling 3D printed items, painted models can help you:

• Increase product value

• Attract more customers

• Offer custom color options

• Stand out from competitors

• Build a premium brand

Painted prints often sell for 2x–4x more than unpainted ones.

Conclusion

Painting 3D prints is an art that transforms plain models into visually striking, professional-quality pieces. Whether you’re painting miniatures, props, or home decor, the right preparation, materials, and techniques make all the difference. By sanding properly, choosing the right primer, applying thin layers of paint, and sealing the final product, you can bring your 3D creations to life.

This skill not only enhances the beauty of your prints but also adds value if you’re selling them. With practice, patience, and creativity, anyone can master the art of painting 3D prints and produce stunning, detailed, and durable results. So pick up your brushes, choose your colors, and start transforming your 3D models into works of art!

FAQs

Can you paint directly on a 3D print?

Yes, but it’s not recommended. Always use a primer before painting to help the paint stick better and give a smooth finish.

What is the best paint for 3D printed models?

Acrylic paint and spray paint are the most popular because they dry fast, are easy to use, and give a clean finish.

Do you need to sand 3D prints before painting?

Yes. Sanding removes layer lines and rough spots, which helps the paint look smoother and more professional.