This is how the cups are designed:
If you wish to have a writing on your cup, apply it with the porcelain brush pen and burn it in the oven according to the manufacturer's instructions. With our used Brushpens this is 25 minutes at 160 degrees
Now you can design the lower part of the cup with Alcohol Ink as you like. You can also use the extender and a bellows
Pre-wash the cup piece by piece and do not put too much colour or extender on the cup at once, as the curvature makes it run easily and then it can no longer be processed in a controlled manner
Important: As the colours are not food safe, they only are used for decoration. Therefore, you should make sure that only the lower edge of the cup is designed and that the drinking rim remains free. Wash only by hand.