To keep it looking great for years to come, we recommend treating your fused glass artwork the way you would fine china or crystal: Keep it out of the microwave and dishwasher.
Microwaves can heat unevenly and this, in turn, can lead to cracked glass due to thermal shock. (We’ve had plates crack in the microwave at the Bullseye factory.) Time, temperature and even the food being cooked play a part in safe heating. Heating slowly or on lower power settings may allow you to avoid thermal shocking glass.
Dishwashers can etch glass over time, resulting in scratched and cloudy glassware.