Breaking glass with a chip of porcelain
Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=83916
Printed Date: April 24, 2024 at 7:58 AM
Topic: Breaking glass with a chip of porcelain
Posted By: Hymer
Subject: Breaking glass with a chip of porcelain
Date Posted: October 09, 2006 at 3:45 PM
I happen to run accross this somewhere on the net.. Just thought it was BS .. well it actually works! Someone said a chip of porcilan off of a spark plug will shatter a wondow without makking a sound... Yeah right... We had junk car , and lookiie there a spark plug.. A few smacks with the bfh, and we had chips of porcilain... threw one the diameter of a pea, yet very thin... and a busted window.. no sound oof anything... me and my bud just looked at each other in amazment.... I suppose it could be a goood anti-tailgateing device???? weird though...
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Tire Proz Stillwater Mn
High End Restyling and Comlete Repair
Replies:
Posted By: Velocity Motors
Date Posted: October 09, 2006 at 5:38 PM
We did tis about 20 years ago in my buddies junk yard and we were shocked it did it as well. It's because of the tempered glass that the porcelain can spider the whole windshield or side glass. I believe the Life Hammer's were porcelain tipped, for those who remember this product. Just to add that if you have a security system that has glass breakage mic, it will trigger and set off the alarm system.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: Flakman
Date Posted: October 10, 2006 at 1:27 PM
Not suprising since porcelain has a Moh hardness rating of about 5-6 which is harder than most steel. I always liked using an automatic center punch to shatter windshields myself  . ------------- The Flakman
I feel strange. I have deja vu and amnesia at the same time.
John | Manteca, CA
Posted By: bigscrun
Date Posted: October 13, 2006 at 6:02 PM
If you sell the AutoPage infrasonic sensor it will trigger with the spidering of the glass.
Posted By: hex0rz
Date Posted: October 15, 2006 at 10:06 PM
In street terms its called shatter rock around here. Many thiefs use it to break windows silently. It does'nt work well since it triggers the sensor for the alarm if you have a window mic. Although, I hear you run a good chance of preventing it if you put duct tape on the window. Supposedly it will keep it from shattering. Leaving a spidered window, pry it out with a screwdriver and pop, its out. You once again won't get far because you have to defeat the other sensors. ------------- Vehicle: Mazda B2200 1989 X-Cab
Audio System:
1. (2) MTX TA3401
2. (2) MTX Thunder 7500
3. (1) MTX TA3202
4. Eclipse Fujitsuten SC8264 Component series
5. Pioneer Premier DEH-P770MP
Posted By: 5150azn
Date Posted: October 16, 2006 at 10:31 AM
Porcelain + Sling shot = Revenge
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Tell the Snap-On guy I'm not here!
Posted By: audiophyle_247
Date Posted: October 28, 2006 at 12:52 AM
hex0rz wrote:
In street terms its called shatter rock around here. Many thiefs use it to break windows silently. It does'nt work well since it triggers the sensor for the alarm if you have a window mic. Although, I hear you run a good chance of preventing it if you put duct tape on the window. Supposedly it will keep it from shattering. Leaving a spidered window, pry it out with a screwdriver and pop, its out. You once again won't get far because you have to defeat the other sensors.
Window tint works against you there too :( (replaces the need for duct tape) Worked on my car 2 years ago, alarm never sounded at all & they just pulled the pass window out after breaking it. ------------- Unless it raises the hair on the back of your neck, its only noise!
Posted By: master5
Date Posted: October 29, 2006 at 12:49 AM
Actually had this happen to me a few years back, I woke up, went to my truck and thought I left the window down. When I opened the door I saw the glass all over. The first thing I did was check my led diagnostic and realized my alarm had never gone off. They apparently broke the glass without triggering the shock sensor (which I had set sensitive). Must have crawled in after they broke it. Good news is the only thing they took was some CD's..you know the ones from columbia house that's like 12 for a penny. So no big financial loss other then a window. What I did to prevent this was install an RF field disturbance detector. I figure nothing will stop them from breaking a window if they desire but I at least want my alarm to sound. It is very diffcult to enter the vehicle with that kind of sensor without sounding the alarm. Have had no problems since. I now do a few other "tricks" as well but for contents nothing beats a prox, IMO. -------------
Posted By: pmh61
Date Posted: November 13, 2006 at 2:00 AM
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