Achieved by heating annealed glass to approx 620∞C within a furnace at which point it begins to soften, this is then cooled rapidly. When broken, Toughened Glass fractures into small pieces (called dice). As these particles do not have sharp edges and dagger points of normal broken glass it is generally regarded as Safety Glass.
Toughened Glass must be cut to a size and have any other
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processes (drilling, polishing etc.) completed before toughening because attempts to 'work' the glass after will cause it to shatter.
All installed safety glass should be clearly marked with the British Standard test reference BS6206, with the letter L for laminated, and T for toughened, together with the company registration number of the supplier.
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