• citizensongbird@lemmy.world
    link
    fedilink
    English
    arrow-up
    2
    ·
    3 days ago

    Have just been researching this while looking for stocking stuffers. One alternative I’ve seen is to smash an old sparkplug, the pieces of ceramic are oddly effective at smashing out car windows.

    • Devial@discuss.online
      link
      fedilink
      English
      arrow-up
      1
      ·
      1 day ago

      The spark plug only works on tempered glass, on which these hammers also would also work great. The issue the article is pointing out is that many modern cars use laminated glass, not tempered, which is much harder brake, and on which the spark plug trick would porbably work even worse than one of these hammers.

      Also, carrying around a tiny piece of a broken spark plug in your car, in manner where you can quickly and reliably access it in an emergency is probably difficult.

    • Ech@lemmy.ca
      link
      fedilink
      English
      arrow-up
      1
      ·
      3 days ago

      That was the case when these tools were effective. Has your research shown it still holds true? I would assume the same changes that made the glassbreakers ineffective would do the same for those ceramic shards.