Stone fling hole I – polished glass

Mechanic spot load – short-term – very large dynamics

Type of glass	Polished glass, ornamental glass, rolled sheet glass, all monolithic glass, armoured glass.
Examples	Stone or another bullet from the sling
Beginning	A small opening at the shot side; Irregular rough edge
Lines of process	Irregular hole with short fragmentations efferent from the fissure centre, not always accurately centrifugal
End	The opposite shot side; A remarkably larger outlet opening
Other features	Almost round hole in the glass; Cone with the opening to the opposite shot direction; Smooth acute/sharp edges; Rear small crosscut fragmentations; Round form = vertical hit; Oval shape = diagonal hit; Large kinetic energy = vertical cone = acute/sharp edge; Smaller kinetic energy = flat cone = irregular edge

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