Explore precise repair methods for deep dent repair on state of the art substrates with 3M™ FC Epoxy Metal Filler.
Levelling a dent by pulling it often leads to micro pin holes or overstretching of the thin steel. To seal any surface defects, a non-hygroscopic filler should be used to prevent moisture penerating into the metall and causing corrosion.
Precise grinding tools such as Festool Automotive Systems Geared Eccentric Sander ROTEX in combination with 3M™ Cubitron™ II Abrasives allow less standing steps with a better finish due to finer grids being used.
Using 3M™ FC Epoxy Metall Filler provides you with a non-hygroscopic filler with great adhesion to aluminium, steel and galvanised steel, which is able to seal any micro defects.
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Step-by-step process guide to repair a deep dent in a car body panel
Tip: Don't remove the paint completely from the damaged area as this will allow you to better complete the dent pulling process and reduce the likelihood of causing holes in the substrate.
Note: Always ensure that the equipment properly calibrated depending on the materials being repaired.
Tip: To avoid surface imperfections or pinholes in the substrate, aim to distribute the load across the repair area.
Note: This modern method will reduce the likelihood of causing holes in the substrate and avoid the thin out of the substrate due to a coarse sanding step for the removal.
Note: A new cartridge needs to be equalised before the first application to ensure thorough mixing of the product. After the first use, no futher equalisation is necessary.
Tip for use: warming up the material & surface to ~30°C before material application will help to accelerate curing, particularly at cold ambient temperatures.
Tip: Pre sanding step can also be done by using traditional body files if necessary.
Here are some valuable insights into specific challenges surrounding repairing deep dents on car panels, including quick tips on preventing common issues such as....
Common methods for deep dent repairs can lead to defects and pinholes in modern steels and substrates, which are made these days from thinner sheet panels.
Welding equipment must be properly calibrated to avoid too much heat entrapment. Distribute the energy load across the whole repair area during pulling, to avoid any holes and overstretching of the substrate.
The repair of damaged sheets of modern steels and high-strength steels in the outer skin of a vehicle can be problematic, because of their very special properties. Those types of steel are sensitive to thermal stress, which can negatively impact on the hardening properties of the steel.
Avoid introducing heat into the grinding process by using precise grinding tools such as Festool Automotive Systems Geared Eccentric Sander ROTEX in combination with 3M™ Cubitron™ II Abrasives Disc. This generates a better finish due to changed grain recommendation, reduced repair size and a better quality of the dent repair "from the start" with the goal of maintaining structural rigidity.
Polyester resin fillers usually have less adhesion and worse mechanical properties than epoxy resin based products. Polyester fillers have hygroscopic properties and absorb water, which can lead to long term corrosion and delamination.
Using 3M™ FC Epoxy Metal Filler provides you with a non-hygroscopic filler with great adhesion to aluminium, steel and galvanised steel, which is able to seal any micro defects.
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