After the paint dried, I put all of the glasses on a cookie sheet and placed it in a cold oven. I turned the oven up to 350 and let them bake for about 30 minutes. Then, I turned the oven off and let the glasses sit in the oven until they were cool. This process is supposed to "set" the acrylic paint and make them safe for use in the dishwasher. I made two glasses for myself to try out the process. We don't have a dishwasher - but they have held up to hand washing just fine.
I also used this process on a couple of ornaments. I didn't bake the ornaments - I didn't feel like they needed to be dishwasher safe. The hardest part was trying to find a way to hold the ornaments without touching the wet paint.