baking a Dollar Tree mug at 250 degrees for 2 hours provided the best results. What is the best way to make, bake, and care for Sharpie mugs? A test of different temperatures, times, and kinds of washing to find out.
The Ultimate Guide to DIY Sharpie Mug . Tree mug at 250 degrees for 2 hours provided the best results. The color of the paint remained largely the same and paint on the mug did not chip at all (except for the minor top chipping).