Visually checking and correcting flaws in motor vehicle panels - by spraying with PVC or polystyrene film-forming lacquer whose gloss shows up any defects

Checking the shape of impact-deformed vehicle body components, e.g. mudguards, fenders, bonnets, after they have been repaired by re-shaping with a spreadable filler compsn. comprises applying a glossy, strippable, film before the lacquering or painting step. The film is applied by spraying. It consists of PVC or polystyrene varnish. It is initially liq. but set immediately after application had can be stripped in large-area sections. Its gloss enables even relatively unskilled operatives to notice any unevennesses in the workpiece being repaired, thus enabling corrective action to be taken.