Preheat your oven to 300 degrees fahrenheit and set your mug on a cookie sheet for easy removal after baking.
Ceramic cups in oven.
If the glaze on the ceramic bowl isn t waterproof then the porous clay beneath is unprotected.
Most mugs and dishes have a maker s mark that identifies the manufacturer.
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Turn the oven onto bake at 360.
Many coffee mug sets come with a small book of care instructions.
If the cup doesn t have any text printed on it check the box that it came in.
This can make the bowl sensitive to the temperature changes that can occur when you put a cold or room temperature bowl inside a preheated oven.
Place the freshly painted mug in a cold oven.
Allow the oven and mug to cool together completely.
Do not preheat the oven because the mug may crack or shatter if it does not gradually heat.
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Bake for 30 minutes.
When the 30 minutes is up turn off the oven but leave the mug inside.
Step 4 bake your mug for about 35 minutes or for the time indicated in the instructions on the paint packaging.
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