• Secure (glue) die to surface
  • Use fine sandpaper (1200+?) to remove a layer
  • Using polishing paste, Dremel polish layer to photographic quality


  • Materials readily available
  • Safe (for user)
  • Low cost


  • May not be as repeatable as chemical etching
  • Labor intensive
  • Risky, easy to grind too far


  • Nohl used Dremel + sandpaper for his MiFare Classic attacks according to CCC talk
delayer/abrasive.txt · Last modified: 2013/10/20 10:59 (external edit)
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