What is the result of using a spring-loaded center punch to break tempered automobile glass?

Using a spring-loaded center punch on tempered automobile glass results in many small, uniform-sized pieces of glass due to the way tempered glass is designed to break. This type of glass is treated with thermal or chemical processes to increase its strength and safety. When it is struck with a center punch, the tension created within the glass causes it to shatter into small, cube-like pieces instead of sharp shards.

This characteristic is advantageous in automotive and architectural applications because it minimizes the risk of injury. The uniform pieces are less likely to cause serious cuts or injuries to individuals in the vicinity when the glass breaks, thus enhancing safety. The method of breaking tempered glass is intended to ensure that if an impact does occur, the resulting pieces are manageable and less hazardous compared to other types of glass.