Removing Dents With Heat
Preparation
Before the dent can be removed, the surface must be cleaned. This is for matters such as loose dirt, grime, loose emulsion and dust, provided not removed, Testament incline baked into the paintwork of the vehivle and have need appreciable sanding and grinding to licence. The dent and surrounding metal should be washed and then rinsed thoroughly of any soap or cleaner residue before duration towel-dried. With this done, one is ready to proceed.
Removing Dents
A blow-dryer or condominium stain stripper is used to heat the dent evenly to the objective where the metal would target burns to the touch. Obviously one should not touch the dent, nevertheless simply fondle the air over it. The heat radiating from the metal should be apparent. The castle colouring stripper gets blazing Sufficiently to potentially burn the distemper of the motorcar, so yield burden to break off before that happens. It's always composed of an incalculable number of component molecules with space in between them. These molecules vibrate depending on how much heat energy they possess. That's what makes matter go from one state to another: The molecules gain or lose so much heat energy that the change occurs. Moisture from the CO2 evaporating is then wiped off where the dent was.
Why Does This Work?
This process of heating and then chilling the metal removes the dent because of an interesting quirk of physics. Solid matter is not really solid. A can of air under vigour, such as the kinds that are used To cleanse electronics and keyboards, is shaken up and then sprayed across the surface of the dent. As the can was shaken, it Testament spray gone liquid CO2, which is Freezing and Testament engender freeze to articulation on the metal of the dent after a scarce seconds. The refrigerate is left to melt in a scarce minutes. During that time, the dent will correct itself. In this case, the change of matter does not occur, as not enough heat energy is used to cause it, but enough heat energy is used to cause the molecules of the dent to vibrate faster than normal. This causes the metal to expand slightly. The metal is then chilled with the CO2, making the molecules of the metal slow down very fast. Because they slow down so suddenly, the metal contracts, and it shrinks slightly as its molecules pack closer together. This contraction pulls the metal of the dent into line with the metal surrounding it, removing the dent.
