What You’ll Need

• “Be Flex” – Transparent Polyurethane Doming Resin – Scratch-Resistant: A scratch-resistant, transparent doming resin ideal for flexible stickers and labels that require flexibility, clarity, and UV resistance.
• Mixing sticks
• Nitrile gloves and protective workspace covering
• Disposable pipettes or a small dosing syringe
• A level, dust-free surface for curing

Step 1: Prepare the Surface

Carefully clean the sticker surface to remove any dust, oils, or residues. Use a lint-free cloth and, if necessary, a mild cleaner suitable for the sticker material (avoid strong solvents). Let the stickers dry completely before proceeding. This helps ensure a strong bond between the resin and the sticker, and minimises the risk of imperfections.

Step 2: Mix Your Doming Resin

Accurate mixing is critical for a clear, bubble-free dome. Measure out the resin and hardener following the manufacturer’s ratio—precision ensures complete curing and optimal flexibility once set. Mix the components slowly in a clean cup, avoiding fast or vigorous stirring, which can introduce excess bubbles. For flexible doming applications, “Be Flex” – Transparent Polyurethane Doming Resin – Scratch-Resistant is specifically formulated to produce exceptional clarity and flexibility for stickers.

Step 3: Apply the Resin

Carefully use a pipette or dosing syringe to dispense the mixed resin onto each sticker, working slowly to prevent overflow. Start in the centre and gently guide the resin outward, allowing it to reach the edges and form a dome through surface tension. Allow the resin to self-level—avoid the temptation to spread it with tools, as this can disturb the smooth finish or cause spills. Work in a dust-free environment and let the domed stickers settle for several minutes to release any trapped air bubbles (pop any that appear with a pin or gentle exhalation).

Step 4: Cure and Protect the Stickers

Once poured, cure the stickers on a level, protected surface away from direct sunlight, dust, or disturbance. Protect the domed stickers while curing—a loose box or dedicated curing cover works well. Curing times vary depending on temperature and humidity but usually run 12–24 hours. After curing, stickers will be flexible and have a resilient, glossy finish suitable for everyday use and outdoor exposure.

Tips, Troubleshooting, and Common Mistakes

Always measure and mix the resin precisely—insufficient mixing can lead to tackiness or weak domes. Work in a clean, warm, and well-ventilated space for even curing. Avoid pouring too quickly which can cause overflows or air entrainment. If bubbles persist, let the resin sit for a minute before pouring to allow them to rise and pop. Test your technique on scrap stickers before larger batches to perfect your process.