Today we are dealing with the following two questions:
For today’s questions, see our full video response below!
The short answer is ‘Yes.’ Whatever we do: notches, holes, poor edge work, cutting, door hinges – all of these decreases the bending strength of tempered glass.
Tempered glass and annealed glass do not have, in practice, any difference in terms of scratch resistance. In theory, if we think about tempering process, it does introduce some compressive forces that close these microscopic scratches on the surface of the glass. Therefore, in theory, on a microscopic level, tempered glass is more scratch resistant. There are certain standards in EC and ISO that define these, but all of these are just laboratory tests. In practice, there’s no difference between tempered or annealed glass when it comes to their scratch resistance.
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