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Comment by monster_truck | Hacker News Reader

None of these glass breakers are any good at what they're supposed to do anyways, I'd wager all of their websites delinate that they are for tempered glass only. What you want is porcelain or ceramic.

Unfortunately, afaik, porclean/cermaic glass breakers are illegal in most states. They are "Burglary Tools".

Nothing wrong with keeping a box of spark plugs in your center console though

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A ceramic glass breaker isn't going to be any better than the metal tools on laminated glass, breaking the glass is only half the battle, you've still got to get through the intact glass pane held in place by the plastic laminate.

>Nothing wrong with keeping a box of spark plugs in your center console though

But then you've got to keep a tool to break the spark plug to give you a sharp ceramic shard to get through the glass.

Exactly. It’s the plastic middle layer that screws you.

Does a knife help there?

Sure, it’ll probably be pretty slow though. Ideally you’d have a serrated blade

It doesn't matter. You barely have to throw a speck of it harder than you'd throw a dog toy for it to shatter laminated glass.

That old spark plug thing was from when cars had tempered side windows, wasn't it? I don't see how those would be particularly effective at dealing with lamination.

Thieves in my city use the kind of automatic center punch that you can buy at any hardware store.

Broken spark plugs are also known as "ninja rocks," for what it's worth. Also considered illegal burglary tools in some states.

I fail to see how any of your suggestions are going to do any better on laminated glass. Breaking the glass isn’t the problem here, it’s the lamination.

Would a spark plug work on laminated glass?

Or when in something with windows like a Cybertruck maybe a 45

Just imagining firing that in a car is making my ears ring.

> None of these glass breakers are any good

...unless you're demonstrating unbreakable cybertruck glass to the world.

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