Can Electromagnets Pull Out Car Dents?

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SUMMARY

Electromagnets can potentially pull out hail-size dents from cars, provided they maintain a flush contact with the dent. A specific electromagnet measuring 1-3/4" in diameter with a holding capacity of 700 lbs may be effective if positioned correctly. The effectiveness of an electromagnet is determined more by the current in the coil rather than its size, as higher current density enhances lifting capability. While electromagnets are often depicted in media as capable of lifting cars, practical application for dent removal requires precise positioning.

PREREQUISITES
  • Understanding of electromagnet principles
  • Knowledge of current density and its impact on electromagnet performance
  • Familiarity with practical applications of electromagnets in automotive repair
  • Basic skills in positioning tools for effective use
NEXT STEPS
  • Research the principles of electromagnetism and its applications in automotive repair
  • Learn about current density calculations and their relevance to electromagnet strength
  • Explore various tools and techniques for dent removal, including suction methods
  • Investigate case studies of successful electromagnet use in automotive dent repair
USEFUL FOR

Automotive technicians, DIY car enthusiasts, and anyone interested in innovative methods for dent removal.

fattestcat
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I was wondering if it is possible to pull a hail-size dent out of a car with an electromagnet. I have seen an electromagnet that is 1-3/4" diameter and can hold 700 lbs. Will this do anything or what?
 
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You could probably do it if you could keep the magnet flush with the indentation. Otherwise, the holding power of just the edge of the magnet may not be adequate.
 
did you try a plunger
 
Some electromagnets can lift a car. We see it on TV and movies quite often. It is not the size that matters, but the current in the coil (although the bigger the electromagnet, the more wire you can loop around it, adding to current density)
 
It is not the size that matters, but the current in the coil

Try telling that to my girlfriend! :smile: :smile: :smile:
 

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