Will Spark Plug Ceramic Break Glass

We wanted to test the urban legend that a piece of spark plug ceramic warmed to body temp could break glass.

Will spark plug ceramic break glass. Several people have suggested that the charge of the glass and the ceramic from the spark plug create a spark that breaks the glass in an explosive way. You can also use a hammer or metal bar. The only charge of any significance here is the one you ll pay to replace your window. This is a myth.

To break the glass with the spark plug begin with getting the plug either from inside or outside the car. Heres how it goes. Although effective spark plug fragments will not work all the time. Spark plugs are made of aluminum oxide ceramic which is exceptionally hard.

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. Mike shows how porcelain from a spark plug can break glass with ease. After smashing the plug you should end up with porcelain chips with sharp edges. Does this only work on auto glass.

Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube. The ceramic could leave a scratch but that is all that would happen. Why doesn t he just use the hammer. When thrown with moderate speed at a side window a sharp shard of the exceptionally hard aluminium oxide ceramic used in spark plugs focuses the impact energy into a small enough area without blunting to initiate cracking releasing the internal energy and shattering the glass.

With the plug in hand smash it into the ground or on the side of a masonry building. Then tries to do the same with a rock.