How to repair dents in metal bumpers

Written by steve smith
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How to repair dents in metal bumpers
Repair dented car or lawn machine bumpers. (Jupiterimages/Photos.com/Getty Images)

Though metal bumpers are quickly being phased out on cars, several home appliances and machines like tractors and mowers still use some form of metal bumper. When a metal bumper is damaged or dented, it leads to rust and is unsightly. So, repairing these parts is a top concern if you want to keep your items looking their best. Using a simple, hands-free approach is one way to do it. This method requires no pulling, pushing or reshaping and it is a quick fix.

Skill level:
Moderately Easy

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Things you need

  • Household cleaner and rag
  • Hair dryer or heat gun
  • Can of compressed air

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Instructions

  1. 1

    Thoroughly clean the area of the dent with a household cleaner and rag to remove dust and debris. Assess the dent to figure out where the deepest part is and where the dent ends. Make a mental note of these locations.

  2. 2

    Heat the entire dented area with a heat source like a hair dryer or heat gun. Hold the heat gun or hair dryer on the area for about a minute or two. Refrain from using a torch, as this damages paint and leaves a residue. You only need to raise the temperature of the metal slightly.

  3. 3

    Immediately apply CO2 to the dented area. To do this, hold a can of compressed air upside down and point the spray straw toward the dent. Depress the handle to spray the material onto the metal. Coat the entire area.

  4. 4

    Wait a few seconds and watch the dent pop out. The contracting metal will flex and pull out the dent without any additional touching or shaping. If not, reheat the dent for a longer period of time and spray more CO2 onto the surface. This will increase the chance for success.

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