Oven doors can sometimes shatter unexpectedly, leaving many home cooks startled and concerned. The main reasons for this are the type of glass used in the door and microscopic imperfections that naturally occur during manufacturing. Most modern ovens use tempered soda-lime glass, which is designed to be strong but is sensitive to sudden temperature changes. Higher-end models may feature borosilicate glass, which is more resistant to heat but still not immune to breakage.
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