Toughened glass cannot be drilled or any other processed and edgeworked in any manner.
Toughened glass ordered to templates must be accompanied with a full scale template made to the
Minimum edgework finish on toughened glass up to 12mm is a standard arrissed edge. Minimum
edgework on greater thicknesses should be a flat ground edge;
Slight distortion or bowing may occur after toughening but is largely controllable. It will vary with
substance, tint, surface treatment, size and shape of the glass. Ceramic painted, sandblasted or
reflective coated glass has a greater tendency to bow and special tolerances would be advised.
Flatness will be measured when the glass is standing on edge with a straight edge placed along the
full length of the panel and a wedge measurement taken at the centre position. Refer to our technical
department for more information.