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Ford Kuga
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Body Repairs - General Information » Panel Beating Technique and Smart Repairs
Heat-induced material shrinking

Material shrinking, also called settling in, can be performed in a variety of ways depending on the extent of the damage and the access to the repair area.

These repair processes differ depending on the type of heating and subsequent working of the heated surface. They sub-divide into two basic processes:

  • Heating using a carbon electrode.
  • Heating using the oxy-acetylene torch.

In the carbon electrode process the working is done exclusively by warming. In this case the access to the repair position is only from the outside.

Heat-induced material shrinking

Des cript ion Description
1 Carbon electrode
2 Spiral shaped heating pattern

If the damage is concentrated in a spot and is in the form of a more rigid raised area, then the carbon electrode must be replaced by a copper electrode. As heat is applied, slightly more pressure is applied to the raised area.

In the method using heating by the oxy-acetylene torch, material shrinking is achieved by a combination of heat and mechanical working of the damaged area.

Heat-induced material shrinking

Des cript ion Description
1 Overstretched area
2 Point heating using the oxy-acetylene torch
3 Spiral shaped knocking back with dolly

The repair area must always be accessible from both sides, so that the heated area can be properly worked mechanically.

The combination of heating and mechanical working is very effective.

As soon as the warm point is established, hammering is immediately started using the aluminum hammer together with a suitable dolly on the inside of the repair surface, working in spiral movements towards the warm point. This causes material to build up in the center of the warmed area.

    More about «Panel Beating Technique and Smart Repairs»:

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    Hollow leveling (removing dent without a dolly)

    Dent removal using hammer and dolly

    Heat-induced material shrinking

    Lead loading

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