The Golden Rule: Polyester or Polymer Coating
Before you start pressing blanks and watching colours appear, there is one rule you need to understand. Sublimation ink only bonds permanently to two things: polyester fibres and polymer coatings. If your item is not made from polyester, it needs a white polymer coating on its surface for the ink to grip. No polyester, no polymer coating, no sublimation. That single rule determines everything you can and cannot sublimate on.
The reason comes down to chemistry. During the heat press process, sublimation ink turns from a solid directly into a gas. That gas penetrates the surface of polyester or polymer and bonds at a molecular level. Once it cools, the ink is locked inside the material, not sitting on top. This is why sublimation prints don't peel, crack, or feel raised to the touch. The ink becomes part of the substrate itself.
Materials That Work
100% Polyester Fabric
Polyester clothing is the bread and butter of sublimation printing. White or very light-coloured 100% polyester fabric gives you the brightest, most vibrant results. This covers t-shirts, hoodies, socks, aprons, and tote bags. The higher the polyester content, the better your colours will look. You can browse our full range of sublimation clothing to see what is available.
Polymer-Coated Ceramics
The classic sublimation mug is a white ceramic mug with a polymer coating on the outside. The ceramic itself does not accept sublimation ink at all. It is the thin polymer layer applied during manufacturing that does the work. The same applies to ceramic plates, tiles, and ornaments. When you buy sublimation-ready ceramics, that coating is already applied and ready to press.
Polymer-Coated Metals
Aluminium photo panels, keyrings, dog tags, and bookmark blanks all use the same principle. The base metal is coated with a white polymer layer. Once pressed, the result is a sharp, photographic-quality image with excellent durability. Metal blanks are popular for products that need to withstand handling, like keyrings and pet tags.
Polymer-Coated Wood
MDF chopping boards, coasters, and plaques are coated with a polymer layer on one side. The natural wood grain can sometimes show through slightly, which gives these products a warm, textured look. Coating quality matters here, so stick with blanks from a reliable supplier rather than trying to coat raw wood yourself.
Polycarbonate and Hard Plastic
Phone cases are one of the most popular sublimation products. These are typically hard polycarbonate shells with a polymer coating on the flat back panel. The coating accepts the ink, and because the case is rigid, you get clean, even coverage with no creasing or distortion.
Polymer-Coated Glass
Glass blanks for sublimation, including beer glasses, wine glasses, and photo frames, have a polymer coating applied to the surface. Without that coating, the ink would simply wipe off. Coated glass produces a glossy, vibrant finish that looks striking with photographic images.
Polyester Canvas
Canvas prints for wall art use a polyester-based canvas rather than the traditional cotton canvas used by painters. The polyester weave accepts sublimation ink directly, giving you full-colour prints with a slight canvas texture. These are popular for personalised wall art and photo gifts.
Materials That Do Not Work
Understanding what you cannot sublimate on saves you wasted ink, paper, and time. Here are the most common materials people try and fail with.
Cotton fabric has no polymer structure. The ink will appear to transfer during pressing, but it sits on the surface and washes out almost immediately. If you need to print on cotton, look at DTF or heat transfer vinyl instead. We cover this topic in detail in our guide on sublimating on dark fabrics and cotton.
Dark-coloured fabrics do not work because sublimation ink is translucent. It has no white ink component, so on a dark background, the colours simply disappear. You need a white or very pale base for the colours to show.
Uncoated metals will not hold the ink. A raw aluminium sheet is not the same as a sublimation photo panel. Without the polymer coating, the ink has nothing to bond to.
Raw, uncoated wood will absorb the ink unevenly and produce a blurry, faded result. Wood needs that polymer coating to create a smooth, receptive surface.
Standard paper and cardboard are cellulose-based, like cotton. Sublimation ink will not bond permanently. Sublimation paper is designed to release ink, not hold it.
Quick Reference Table
| Material | Works for Sublimation? | Why |
|---|---|---|
| 100% polyester fabric | Yes | Ink bonds directly to polyester fibres |
| Polymer-coated ceramic (mugs, tiles) | Yes | Polymer coating accepts ink |
| Polymer-coated metal (photo panels, keyrings) | Yes | Polymer coating accepts ink |
| Polymer-coated MDF (chopping boards, coasters) | Yes | Polymer coating accepts ink |
| Polycarbonate phone cases | Yes | Polymer coating on hard plastic |
| Polymer-coated glass | Yes | Polymer coating accepts ink |
| Polyester canvas | Yes | Polyester weave accepts ink directly |
| Cotton fabric | No | Cellulose fibres, no polymer to bond to |
| Dark fabrics (any material) | No | Ink is translucent, no white ink |
| Uncoated metal | No | No polymer coating |
| Raw wood | No | Absorbs unevenly, no polymer surface |
| Standard paper or cardboard | No | Cellulose-based, ink will not bond |
Choosing Your First Blanks
If you are just getting started with sublimation, begin with products that are forgiving and easy to press. Mugs and t-shirts are the most popular starting points because they are affordable, widely available, and have strong customer demand. From there, you can expand into hard goods like coasters, keyrings, and photo panels as your confidence grows.
Whatever you choose, always buy blanks that are specifically listed as sublimation-ready. A regular ceramic mug from a homeware shop will not have the polymer coating you need. Browse our full range of sublimation blanks to find products that are ready to press straight out of the box.