DIY Painted Mugs That Won't Wash AwayThere are a few baking rules which are all printed on the back of the marker for easy reference. 1. Don’t preheat your oven. Put your piece in first then turn on the oven to 375 degrees. 2. Set your timer for 40 minutes AFTER the oven has come to temperature, not when you put the mug in. 3. Don’t take your mug out when the timer goes off. Instead, turn off the oven and open the door. Let the mug cool as the oven cools.
There is nothing more fun than being able to customize your own mugs with your own designs, sayings and more! Don't go to the expense of having them printed. Just learn how to make a custom mug with a sharpie.