At deep cave-in of elements of a design of a body first of all try to curve a dent before the maximum approach to a normal form of a body. Body metal in the place of blow is exposed to a pulling therefore the complete recovery of an initial form is impossible. Alignment of a dent about 3 mm lower than the level of a surrounding surface is considered optimum. If there is an access to dent inside, it is necessary to correct accurately it the hammer with wooden or plastic brisk for what make the following.
Densely press the wooden whetstone suitable by the size from outer side of the corrected area. It is required for depreciation of blows of the hammer and prevention of a flexure of more extensive area.
If the dent is in that area of a body where access from a reverse side is complicated or impossible, drill several small openings in the deepest points of a dent, screw several screws self-tapping screws in them and extend a dent by means of flat-nose pliers for the acting heads of screws.
Remove paint from the damaged area and at distance of 20 mm around it.
The easiest to make it the wire brush or an emery paper got on the circle fixed in the electric drill.
After alignment of a dent apply on it a layer of hard putty, paint and polish.