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Edge break I – polished glass

Mechanic spot load – short term - small / medium intensity
Type of glass

Polished glass, rolled sheet glass, laminated glass, ornamental glass.

Examples

Small stones between pieces of glass;

Hit by an object;

Hammer hit on the glass belt;

Other hits or collisions.

Beginning

Edge crack angle in all directions, not upright;

Transition angle is not upright;

Visible outlet point in the zone of the edge;

Possible curvilinear cracks in the break centre.

Lines of process

Beam forms form the edges;

From direct to angular break lines;

Often do not last till the adjacent edge, seldom – till other edges.

End

Direct lines;

In the middle of the glass or last till the glass edge.

Other features

Possible curvilinear cracks by the adjacent edge.