Graffiti is usually caused by forcing a hard metal object such
as a carbide probe, screwdriver, spark plug or diamond cutter
over the surface of the glass. The result is a deep, sharp
edged, damage which we refer to as a 'hard scratch'. Glas Weld -
Chicago Glass have developed a two stage process for the removal
one uses an abrasive flat disc to take away the sharp (hard)
edges of the scratch and turn them into 'soft' scratches that
can be treated by the G Force polishing system - which causes
the glass to flow into the void. (see Our System for roughing
process creates a haze on the glass, but because the abrasive
action is flat on the surface, there is a minimal stock glass
and thus minimal distortion. the area is hazed, it is polished
by the G Force over a larger area than originally damaged and,
as a consequence, the flow of glass 'repairs' both the original
scratched area and the area that has been hazed. there is
minimal distortion, this would not be noticeable when viewed at
normal angles by shoppers (