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– By drilling into the crack (5 mm) and grinding out to a V-shaped
groove, you can remove irregularities caused by stretching of
the plastic.
– Then clean the repaired area with cleaning fluid. Allow to dry
for 5 minutes.
– Spray on a thin coat of primer and allow to dry for 10 minutes.
– As the next step, bond in a reinforcing mat onto the reverse
side of the panel using adhesive so that it overlaps the dam‐
aged section by at least 20 mm.
– The hardening process can be speeded up with the aid of an
infra-red lamp. Set to 15 minutes at 60°-70°C.
– Now you can fill in the hollowed-out area on the front of the
panel using adhesive and smooth down with a scraper.
– Again, the hardening process can be speeded up on the front
of the panel with the aid of an infra-red lamp.
– Now rub down the repaired surface with sandpaper (120
grade).
– Remove sanding dust.
– Spray on a thin coat of primer and allow to dry for 10 minutes.
– Apply paint finish as specified in the Audi paintwork manual.
12.4 Repairing holes (up to 30 mm diameter)
General InformationBody Repairs, General Body Repairs - Edition 04.2018
12. Plastic repairs 61
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