The ceramic stones are actually ceramic shards that come from spark plugs.
Ceramic spark plug break window.
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Spark plugs are made of aluminum oxide ceramic which is exceptionally hard.
Although effective spark plug fragments will not work all the time.
In part 1 we learned porcelain from a spark plug can break glass but what about other porcelain like a toilet.
An article on the american ceramic society s website explains the hard ceramic fragments of broken spark plugs are great at breaking tempered glass.
When done right the spark plug shutters the glass immediately and since the tempered glass is designed to break with little noise not much noise is produced.
The impact of the shard against the glass creates a tiny structural failing which rapidly spreads the tension through the rest of the screen causing it to break.
While i have seen other people using the whole plug you only need the spark plug insulator the ceramic part.
Ninja rocks are broken shards of spark plugs that are formed by smashing the ceramic portion of the spark plug with a hammer or other large object.
Does this only work on auto glass.
We had to give it a shot.
I wouldn t say breaking the car window with a plug is quiet.
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