Edge break from pressure I – polished glass

Mechanic spot load – short-term – small/medium intensity

Type of glass	Polished glass, rolled sheet glass, laminated glass, ornamental glass.
Examples	Too small supporting logs, when the glass weight is big; Too big pressure when screwing; Too big pressure when tightening the wooden glass belt without gasket.
Beginning	Edge crack angle in all directions, not upright; Transition angle is not upright; There are no or very few edge curvilinear cracks; Clear centre in the edge.
Lines of process	Beam forms from the edge; From direct to angular break lines; Often do not last till the edge.
End	Direct lines
Other features	In the middle of the glass or last till the edge of the glass

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