Can a knife blade tip be used as a glass breaker?

chiral.grolim said:
A carbide tip in NOT required as mentioned above. You can break a glass window with all manner of implements from softer materials. Again, as mentioned above, you simply need a focal point and sufficient force behind it. A smaller focal point demands the less force to accomplish the task. Ceramic carbide is popular because it is inexpensive and resists deformation, maintaining a small impact focal point. But steel will work just fine:
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I apologize, I did not mean REQUIRED. I meant that a carbide tip is preferred because you will quite likely deform steel, especially something like a blade. You can break glass with dang near anything, but using a harder material tip will work EASIER.
 
XiaolongJackson said:
EDC some gloves. Now your hands are glass breakers.
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Baddd idea... Just last night a friend of mine took a hammer to a window while wearing thick leather gloves. Wanna guess how many stitches he got?

Unless you're wearing Hex Armor or chainmail, gloves won't phase a glass shard.

And if we're talking treated car windows, you'll break your hand before the window gives way.
 
Every time someone talks about breaking a car window, I have to bring this up.
[video=youtube;aiSTAcYl0_w]http://www.youtube.com/watch?v=aiSTAcYl0_w[/video]
 
i think if your in a situation where you'd need to immediately break some glass a knife tip will deliver the desired point load needed, sure you make break your tip but you'll be out of the car...that said, if your worried about it keep a dedicated rescue tool accessible to the driver, i have mak1, some crkt seatbelt tool and a mag light all secured under the drivers seat, if for some reason i can't reach that i always have my edc fixed blade on my hip and will go for it with the knife regardless of stitches or broken blade tips......i think if you ever really need the glass breaker function things have gone southward as it is and you won't really care about alot of the negs people are saying here...well unless your a thief or an a-hole and you just walk around breaking windows all day long...i see the arguments against using a knife for such a task moot...with that though, every car should have a seat belt cutter, glass breaker, aid kit,flares ect ect ect....

also keep in mind your carbide tip glass breaker is almost useless if the window is rolled down part way, you need a wrench to torque the window from the top, the mak-1 has a groove for this at the top of it... you can pick up a cheap rescue tool for around $20, chuck it in the glove box or center console and forget about it till you need it.
 
Only time I ever broke a car window...it was the windshield...and I broke it with my bare palm smashing a mosquito that was in the car. What are the chances that I hit the mosquito in the right place so that its blood sucker tube was the focal point? :p

The only problem was that it was not my car and insurance didn't cover it because it broke from the inside...but luckily I didn't get cut somehow.
 
ShooterMcgavin said:
Where can I get a small carbide tip, to install into my knife handle??
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You can start with solid carbide drill bits or used circuit board drill/grinder bits. Cut it with a diamond grit blade for a dremel, then put a point on it by turning it it a drill press while using the dremel diamond blade at the sametime to get the point. Wear a respirator !!!!
James
 
mcgoo7 said:
You can start with solid carbide drill bits or used circuit board drill/grinder bits. Cut it with a diamond grit blade for a dremel, then put a point on it by turning it it a drill press while using the dremel diamond blade at the same time to get the point. Wear a respirator !!!!
James
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i always thought these might work...
carbide scriber tips
 
ShooterMcgavin said:
Very cool. Thanks. I wonder what are the dimensions of those though.
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they are fairly long, i'd think you'd need to cut a bit off if anything, look at a scribe to give you an idea, they are a bit longer as the shank is steel ,hypothetically you could just tap a hole in the back of any knife and loctite in the carbide tip
 
Grease said:
Baddd idea... Just last night a friend of mine took a hammer to a window while wearing thick leather gloves. Wanna guess how many stitches he got?

Unless you're wearing Hex Armor or chainmail, gloves won't phase a glass shard.

And if we're talking treated car windows, you'll break your hand before the window gives way.
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One inch punch it, like Bruce Lee.
 
I think they say spark plug insulator is hard enough to easily shatter glass. I think its some sort of ceramic. Most people have em laying around. Probably the hardest thing for under a couple bucks. Not sure how to fashion it into something useful. Crooks usually shatter em then throw the little chunks at car windows (windshield is laminated so it would just crack). They call em ninja rocks because a tiny piece will shatter a window and physics is like magic to street punks. Also because it makes very little noise as opposed to beating the thing.
 
XiaolongJackson said:
EDC some gloves. Now your hands are glass breakers.
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are you sure about that?

spark plug and an elastic/rubber band.
spring loaded center punch.
resqme
holmatro glass breaker.
i wouldn't use a knife tip and definitely not my hands.

always wear gloves, safety specs and a P2 mask when breaking glass.
the clouds of glass dust are not very good for your lungs .
 
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