Process Information

General

In order to assist our glass through the tempering processes it is a requirement that holes are located at a MINIMUM distance, as indicated on the following schedule. These rules will generally apply to laminated glass as well. However basic design rules require:

Holes must have an internal radius corner that is as large as possible
The width of each panel is as wide as possible
The amount of glass between a hole and the edge of the glass, or between two holes, must be great as possible.
Combinations of holes and notches or groups of holes within close proximity are to be avoided.

Hole Sizes and Positions

Holes are available in all sizes.
Hole diameters should be at least 1.2 times the thickness of the glass.
The minimum amount of glass between the edge of a hole and the edge of the glass should be 4 times the thickness of the glass, and at corners 8 times the thickness of the glass.
When 4 or more holes are located within a group the minimum amount of distance between the holes and the edge should be 6 times the thickness of the glass. The minimum distance between two adjacent holes should be 4 times the thickness of the glass.