Tempered mirror

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Tempered Mirror

Temepred Mirror can resist breakage

These are manufactured using fully tempered glass as the substrate. There are optical characteristics inherent in tempered mirrors, including roll distortion and the lack of a quality surface for silvering.

Tempered glass mirrors resist breakage and provide a measure of safety from broken glass, but differ in color and reflective quality from standard glass mirrors. Bear Glass uses the highest quality tempered glass mirrors. Modest distortion or heat-generated markings are normal in the tempered glass mirror manufacturing process.

How to Temper Glass

Tempered glass, or toughened glass, is glass that has been heat-treated to make it stronger, more resistant to heat and break in a way to prevent injury.


Cut the glass into the desired shape first

This has to be done before the glass is tempered, as the tempering process will weaken the glass if it is cut or etched afterward and may increase the likelihood of breakage.

Inspect the glass for imperfections

Cracks or bubbles may cause the glass to break during tempering; if any are found, the glass cannot be tempered.

Sand the cut edges smooth

This removes any burrs created during cutting or etching.

Wash the glass

This removes any tiny grains of glass deposited during sanding, as well as any dirt that may interfere with the tempering process.

Heat the glass in a tempering oven

Glass may be fed in batches or continuously. The oven reaches temperatures of over 600 degrees Celsius (1,112 degrees Fahrenheit), with the industry standard being 620 degrees Celsius (1,148 degrees Fahrenheit).

Quench the glass to cool it

The heated glass is subjected to seconds of high-pressure blasts of air at various angles. The rapid cooling causes the outer surfaces of the glass to cool and contract faster than the center, giving the tempered glass its strength.