How to paint?
1 May 2023

Resin 3D printing has made it possible to create highly detailed models that are perfect for painting. The smooth surface and fine details of the resin make it an ideal material for painting. In this blog post, we will guide you through the steps to paint resin 3D printed models.

Tools and Equipment Needed

Before we start, here are the tools and equipment you’ll need:

  • UV light
  • Soft-bristled brush
  • Isopropyl alcohol (IPA)
  • Water
  • Resin 3D printed model
  • Sandpaper of varying grits (320, 400, 600, 800, 1000)
  • Primer
  • Acrylic paint
  • Paintbrushes
  • Sealant
  • Mask
  • Well-ventilated area
  • Pliers
  • Gloves

Step 1: Clean the Model

Before you start painting your resin 3D printed model, you need to clean it thoroughly. Resin models are often covered in uncured resin, which can interfere with the paint’s adhesion. To clean the model, use a UV light to cure any remaining resin. Once cured, use a soft-bristled brush and some isopropyl alcohol (IPA) to remove any excess resin. Rinse the model with water and let it dry completely before moving on to the next step.

Next the parts called “supports” needs to be removed. You can do this by using a pair of pliers or cutters to remove them. After removing the supports, use a soft-bristled brush to clean the model, removing any remaining debris or dust.

Step 2: Sand the Model

After cleaning, use sandpaper of varying grits to sand the model. Start with the lowest grit sandpaper, and work your way up to the highest grit sandpaper. This process will smoothen the surface of the model and remove any bumps or rough patches.

Step 3: Prime the Model

Once you’ve finished sanding, it’s time to prime the model. Priming the model will provide a smooth surface for the paint to adhere to. Apply a thin layer of primer to the entire model, using a paintbrush. Wait for the primer to dry completely before proceeding to the next step.

Step 4: Paint the Model

Now it’s time to paint the model. Use acrylic paint for the best results. Acrylic paint is perfect for resin 3D printed models as it adheres well to the surface and dries quickly. Apply the paint with a paintbrush, starting with the lightest colors first. Wait for each layer of paint to dry completely before applying the next layer.

Step 5: Seal the Model

After painting the model, it’s time to seal it. A sealant will protect the paint and ensure that it lasts for a long time. Apply the sealant with a paintbrush, making sure that the entire model is covered. Wait for the sealant to dry completely before handling the model.

Do’s and Don’ts

Here are some do’s and don’ts to keep in mind when painting resin 3D printed models:


  • Clean and sand the model before painting
  • Use acrylic paint for the best results
  • Apply thin layers of paint and wait for each layer to dry completely
  • Use a sealant to protect the paint


  • Rush the process – take your time and ensure that each layer is dry before proceeding to the next
  • Use oil-based paint – it will not adhere well to the resin surface
  • Apply too much paint – thick layers will result in a rough and uneven finish
  • Handle the model before the sealant is completely dry


Painting resin 3D printed models is a fun and rewarding process that can bring your creations to life. By following these steps and keeping the do’s and don’ts in mind, you’ll be able to create beautiful and long-lasting painted models.