What You Need to Sublimate on Mugs
Mug sublimation is one of the most satisfying things you can do with a sublimation setup. The results look professional, the process is straightforward once you have done it a couple of times, and personalised mugs are always in demand. Whether you are making them as gifts or selling them, this guide covers every step from design to finished product.
Before you start, gather the following equipment. You will need a sublimation printer loaded with sublimation ink, sublimation paper (mug-size paper is ideal as it is pre-cut to fit an 11oz mug without trimming), an 11oz white polymer-coated sublimation mug blank, a mug press, heat-resistant tape, and a pair of scissors if you are using standard-size paper that needs trimming.
One thing worth clarifying early: sublimation only works on polymer-coated surfaces. A regular ceramic mug from your kitchen cupboard will not work. The white polymer coating on a sublimation mug is what allows the ink to bond permanently during the heat transfer. This is why the blanks are always white, as the coating itself is what receives the dye.
Step 1: Design Your Artwork
Create or choose your design using any graphics software you are comfortable with. Canva, Photoshop, Illustrator, or even free tools like GIMP all work perfectly well. Set your canvas size to match the printable area of the mug. For a standard 11oz mug, the printable wrap area is approximately 240mm x 95mm.
A common question from beginners is whether the image needs to be mirrored. If you are wrapping the paper around the mug (which is the standard method), mirroring is not necessary. The printed side of the paper sits directly against the mug surface, so the image transfers the right way round. You would only need to mirror if you were doing a flat press transfer, which is not the typical approach for mugs.
Step 2: Print on Sublimation Paper
Load your sublimation paper into the printer with the coated side facing the correct direction for your printer model (usually face down in rear-feed trays, face up in front-feed trays). The coated side is the brighter, whiter side of the paper. Set your print quality to the highest available setting, never draft mode, as this directly affects how much ink is laid down and ultimately how vibrant your finished mug will look.
If you are using mug-size sublimation paper, the sheet is already cut to fit, saving time and reducing waste. If you are printing on A4 sheets, move on to the next step.
Step 3: Trim the Paper
If your paper is larger than needed, trim it down to fit the mug. Leave a small margin of about 5mm beyond the edges of your printed design. This margin helps ensure full coverage when wrapping the mug and gives a small buffer for alignment. Cut neatly with scissors or a craft knife and ruler.
Step 4: Wrap and Tape the Paper to the Mug
Position the printed paper around the mug with the printed (coated) side facing inward, directly touching the mug surface. Pull the paper snug against the mug and secure it with strips of heat-resistant tape along all edges. The paper needs to sit flat against the mug with no gaps or bubbles. If the paper lifts away from the surface during pressing, you will get ghosting, which appears as a blurred shadow around your design.
Use multiple small strips of tape rather than trying to wrap one long piece. This works much better on curved surfaces because it allows the paper to follow the shape of the mug without wrinkling.
Should You Use Shrink Wrap?
Shrink wrap is a thin plastic sleeve that goes over the mug before pressing. When heated, it shrinks tightly around the mug and holds the sublimation paper firmly against the surface. This is particularly helpful for mugs because the curved surface makes it harder to keep the paper in full contact using tape alone.
Shrink wrap reduces the risk of ghosting and generally produces cleaner results, especially if you are new to mug sublimation. It is not strictly required, and many experienced printers get excellent results with tape alone, but if you are having issues with blurring or ghosting, shrink wrap is the first thing to try.
Step 5: Press the Mug
Place the wrapped mug into your mug press and close it. The standard settings for an 11oz sublimation mug are:
- Temperature: 200°C
- Time: 90 to 120 seconds
- Pressure: Medium (the mug should be held firmly but not crushed)
These settings work for most standard 11oz polymer-coated mugs. If you are using a different size or type of blank, check the recommended settings from the blank supplier, as they can vary.
Step 6: Remove and Peel
When the timer finishes, open the press carefully. The mug will be extremely hot, so use heat-resistant gloves. Remove the mug from the press and peel the paper off while the mug is still warm. Peeling while warm gives cleaner results as the ink has not fully cooled and set against any remaining paper fibres.
Set the mug aside to cool completely before handling. Once cooled, your design is permanently bonded to the polymer coating. It will not peel, crack, or fade with washing, and it is dishwasher safe.
Common Beginner Mistakes
The most frequent issues beginners run into are faded colours (usually caused by too low a temperature or too short a press time), ghosting (caused by paper movement during pressing, fix with better taping or shrink wrap), and colour shifts (often caused by using the wrong ICC colour profile in your printer settings). If your colours look washed out, also check that you are printing on the coated side of the paper, as printing on the wrong side is surprisingly easy to do and produces very poor results.
Once you have a few mugs under your belt, the process becomes second nature. It is genuinely one of the easiest sublimation products to get consistent results with, and a great starting point before moving on to garments and other blanks.