Oven door shattering can happen due to temperature fluctuations, physical damage, poor manufacturing, or improper cleaning. Rapid temperature changes, like placing cold items in a hot oven, can cause glass to crack. Slamming the door or dropping heavy items can also lead to damage. Poorly made doors or harsh cleaning products can weaken the glass.

To prevent shattering, preheat the oven slowly, handle the door gently, and use mild cleaners. Check the door regularly for cracks, and replace worn-out seals. If your oven door does shatter, turn off the oven, clean up broken glass carefully, and consider professional repair.

By taking these precautions, you can avoid costly repairs and keep your oven in good condition.