If you want to add colour to resin creations, finish 3D printed parts, or create decorative effects, choosing the right paint or colourant is essential. This guide explains which paints are ideal for use on cured resin, what options exist for tinting during casting, and compares solutions tailored for both epoxy and polyurethane systems—helping artists, crafters, and professionals achieve standout resin finishes.

Overview: Paints and Colourants for Resin Surfaces

There are two core approaches to painting resin: applying paints to the cured surface, or tinting the resin before cure using colourants and pigments. Cured epoxy and polyurethane resins can accept surface paints like acrylics, provided the surface is clean and slightly abraded. For a more integrated effect, especially in casting or art, high-quality liquid colourants or pigment pastes blend directly with the resin for custom hues throughout. Specialist coatings further enable painting effects on 3D printed or cast resin parts, and product compatibility is key—select a paint or pigment designed for your chosen resin system for best results.

Visual Guide: Resin Colouring and Painting Options

Acrylic paints adhere well to sanded, cured resin surfaces for post-cure decoration. For vibrant effects mixed directly into resin, choose Colourfun colourant sets or individual liquid colourants. For 3D prints, 3D Finish prepares the surface for painting while sealing layer lines in a single application.

“3D Finish” – Fast Coating Epoxy Resin for 3D Prints

“3D Finish” – Fast Coating Epoxy Resin for 3D Prints provides a smooth, paintable coating over 3D printed objects made of PLA, ABS, or LAYWOOD. This resin creates a glossy, even film that not only enhances the appearance but also prepares the surface for eye-catching paint applications. Whether you wish to add detail or create a colourful decorative finish, its polishable and paintable qualities make it ideal for finishing, bonding, and repairing 3D prints. Simply cure, sand lightly, and apply acrylic or compatible paints as desired.

“IWhite” – Polyurethane Casting Resin – White, Fast-Curing Two-Part System

The “IWhite” – Polyurethane Casting Resin – White, Fast-Curing Two-Part System offers a fast-setting base for creative casting and model making. It can be coloured in two ways: by mixing compatible pigments into the liquid before casting, or by painting the finished, cured item. The resin’s surface is receptive to acrylics and hobby paints, and its high detail capture makes it a great base for miniature painting, model prototyping, and bespoke crafts.

“Colourfun Set” – Liquid Epoxy Resin Colourant Set for Solid Colour Effects

For artists preferring to infuse colour within the resin itself, the “Colourfun Set” – Liquid Epoxy Resin Colourant Set for Solid Colour Effects provides vivid, concentrated pastes suitable for all transparent epoxy resin projects. Mix with resin prior to pouring for solid, gradient or sea water effects. This set supports easy blending of custom colours, ensuring even coverage and intense hues without streaking. It’s cruelty-free and vegan-friendly, designed for large castings and detailed artwork alike.

“Colourfun” – Liquid Epoxy Resin Colourant 25-100ml – High Coverage

“Colourfun” – Liquid Epoxy Resin Colourant 25-100ml – High coverage enables craftspeople to achieve both opaque and translucent looks by mixing a few drops into the epoxy base. Suitable for river tables, jewellery, and functional art, these colourants blend consistently without affecting resin viscosity or cure. Select from a range of intense shades and enjoy vivid, lasting results in every pour.

Choosing the Right Paint or Colourant for Your Resin Project

Selecting the best solution depends on whether you wish to paint the cured resin surface or create integral colour effects. For surface painting, ensure the resin has fully cured then lightly sand before applying acrylics or model paints. For internal pigments or bold colour, opt for a dedicated colourant set compatible with your resin—like the Colourfun products for epoxy. Always avoid general-purpose or solvent-heavy paints not recommended for resin, as these may affect bonding or finish quality.

Key Tips on Resin Painting and Colouration

Preparation is vital: Clean and sand the resin before painting to ensure adhesion. Only use paints or pigments confirmed as resin-compatible, such as the IWhite polyurethane resin and dedicated epoxy colourants from Colourfun. This minimises issues like peeling, streaking, or poor coverage on cured resin pieces.