How do I heat-fix a design drawn on a cup with the edding 4200 porcelain brush pen?
When the design is finished, leave it to dry for 15 minutes. Now preheat your oven to 160°, place the porcelain on a cold oven shelf, slide it into the oven and bake for 25 minutes. Leave in the oven to cool afterwards. After baking, your hand-painted cups will be dishwasher-safe.