Guns and magnets.


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SomeKid
October 16, 2005, 02:05 PM
Yes it sounds odd, but this little bit of curiosity came to me a few days ago.

If a gun was left around magnets for a period of time, could it harm it? (Somehow pull some small piece away, or magnatize inner parts, thus interfering with normal functioning?)

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Justin
October 16, 2005, 02:38 PM
Nah.

Though there have been a couple of stories in the past of Magnetic Resonance Imaging machines yanking firearms from their holsters.

Kurush
October 16, 2005, 02:47 PM
I can't think of anything that a magnetic field could do that wouldn't be similar to excessive fouling. It's hard to get metal to take on a magnetic field unless it's red hot anyway.

JCM298
October 16, 2005, 03:30 PM
There's a story making the rounds about an officer, armed with a Glock, who found that his pistol would not work after being in a room with an MRI running. Supposedly, the striker and spring froze as a result of being magnetized.

I don't know if the story is true. I did see a training blurb that warned about it and suggested that LEO's check their guns,

John

jamz
October 16, 2005, 07:55 PM
If the magnetic field was strong enough to magnetize the striker, it the attraction would have been strong enough to remove the gun from the holster, or at least pull the officer over to the magnet pretty fast.

Besides, didn't you know that Glocks are incapable of attraction? ;)


-James

bad LT
October 16, 2005, 07:59 PM
I believe that there is some potential to magnitize the firing pin, reducing the speed at which it hits the primer.

Taurus 66
October 16, 2005, 08:16 PM
If the firing pins and other mechanisms were magnetized, it would be an ever so slight flux density. It's not nearly enough to interfere with the mechanics. The spring(s) inside have a much greater force.

After a period of continuous firing, the repeated shock and heat will eventually wear away the magnetism on the parts in question.

artherd
October 16, 2005, 08:32 PM
There's a story making the rounds about an officer, armed with a Glock, who found that his pistol would not work after being in a room with an MRI running. Supposedly, the striker and spring froze as a result of being magnetized.
I call BS. If he was in the room with an MRI, then his gun would have probally killed someone as it was pulled into the MRI.

However it would have still fired and functioned fine when the MRI was turned off.

acdodd
October 16, 2005, 09:04 PM
I call BS. If he was in the room with an MRI, then his gun would have probally killed someone as it was pulled into the MRI.

However it would have still fired and functioned fine when the MRI was turned off.

If someone was between the officer and the bore of the magnet then the gun could hit them. I don't know if it has enough mass to actually kill someone. There was a young boy killed by an O2 bottle that was taken into a MRI room by a transporter who should have known better.
Also you don't just turn off a MRI system. The magnet stays on all the time.
It is a very expensive and time consuming job to ramp the magnet down and back up.
I saw a bucket that was sucked into a MRI and it had to be removed with a rope and pulley system.
AC

SomeKid
October 17, 2005, 12:29 AM
Thanks for the replies, but I am seeing conflicting opinions about the firing pin, anybody know of any actual stories? When I first posted this I had the unpleasent thought that it was so far out it would be pure speculation.

Then again, it is possible to make metals that cannot be magnatized, right?

If anyone is curious, the idea of magnets has to do with a super gun safe idea I had. I am curious to see if it would be worth following. (In 20 years, when I have the money to actually try it out and go for $$$.)

Horsesense
October 17, 2005, 12:40 AM
If a gun were magnetized, it would constantly pick up little bits of mettle that could jam up the inner workings. Just keep a magnet in your pocket for a week and see what I mean.

Kurush
October 17, 2005, 12:46 AM
Then again, it is possible to make metals that cannot be magnatized, right?You could use a titanium firing pin, it seems like a silly thing to worry about though. As someone else pointed out the repeated impacts from firing the gun would demagnetize the pin pretty quickly.

setxcypress
October 17, 2005, 01:10 AM
I don't know if anyone else has this problem with theirs, but my 1911's frame is magnetized. Every time I detail strip, I have to get out a pair of pliers and a blowtorch:uhoh:. No, I don't, I just have problems getting my disconnector and sear to line up properly for the pin.

Edit to add: I have almost 900 rounds through her and not a problem one, but I also detail about every 200 rounds.

Sir Aardvark
October 17, 2005, 01:16 AM
If your gun was magnetized, it would erase all of your credit card info everytime you had your wallet tucked in near your holster. :D

setxcypress
October 17, 2005, 01:25 AM
Luckily, I don't have my CCW yet. Rita put a hold on that, but I'm thinking about staying here in FL where I landed and getting my CCW once I have some time in the state. But by then I hope to have a lightweight snubby or maybe even "/strikes up scary music, duh-duh-dahh" a Glock:uhoh:.

slopemeno
October 17, 2005, 01:39 AM
I would call BS as well. The compressed gas cylinders I provide to the areas of the hospital have to be completely non-ferrous, to prevent then from launching acrross the room and (usually) striking the patient in the MRI. A few years ago locally a patient was being MRI'd while a steel 02 tank was in the room. The tank crossed the room striking and killing the patient. It never fails to amaze me the stuff that goes around the country as "advisories" like this. I think Snoopes need to get involved.

SDC
October 17, 2005, 04:37 AM
Sort of off on a tangent, but there is/was a "Magna-Trigger" conversion for several firearms available at one time, whereby the operator had to wear a magnetic trigger, that trigger then pulling a transfer-bar out of the way to allow use when it was held. Haven't seen anything on it in a long time, though.

brickeyee
October 17, 2005, 11:31 AM
"It's hard to get metal to take on a magnetic field unless it's red hot anyway."

Not really. I have a really nive mag/degauss tool I use for screwdrivers. A strong enough field can create residual, as can stroking iron over a magnet repeatedly. For bulk production it is cheaper to heat, impose a field, and then allow to cool in the field, but it is not required.
Heating of a magnet hot enough will demagnetize it in short order. The temperature is very specific, and a loss of magnetic attraction is one simple method of determining the metals temperature.

Azrael256
October 17, 2005, 11:56 AM
I could see where a REALLY strong magnetic field might rip some ferrous component out of a glock, but it wouldn't just "not work," rather, it would "be in pieces." Compare the energy delivered to the various parts of the gun between the MRI magnet and beating the gun on the table for a couple of minutes. If percussive maintenance doesn't tear up the innards, the MRI isn't likely to do so, either.

Sleeping Dog
October 17, 2005, 12:07 PM
I imagine a strong magnetic field could disrupt a new "smart" gun, one that is supposed to recognize when it's being held by its owner. Wipe out some of the memory and you get a message on the gun's "heads-up display" -
Severe Error! Memory failure!
Bad guy still approaching.
<Retry>, <Ignore>, <Abort>

:evil:

Berek
October 17, 2005, 12:33 PM
There's a story making the rounds about an officer, armed with a Glock, who found that his pistol would not work after being in a room with an MRI running. Supposedly, the striker and spring froze as a result of being magnetized.

I don't know if the story is true. I did see a training blurb that warned about it and suggested that LEO's check their guns,

John

If it is true, could it be possible that it has that new electronic ignition system that they're trying to push down our throats?

Berek

acdodd
October 17, 2005, 02:09 PM
OK here is a link to check out.
http://www.mercola.com/2001/aug/15/mri.htm

brickeyee
October 17, 2005, 02:19 PM
"The tank, about the size of a fire extinguisher, became magnetized, then flew through the air at 20 to 30 feet per second and fractured the boy's skull."

No, the tank probably did not become "magnetized". It was simply attracted by the magnetic field of the MRI machine.
So much for the ability of a newspaper to understand the most simple of things.

MechAg94
October 17, 2005, 02:40 PM
I would think it is more likely that the magnetic field pulled one of the gun's internal parts out of alignment such that it would not easily right itself. At least that seems more plausible to me than magnetizing the gun.

SomeKid
October 17, 2005, 03:06 PM
One of these days, I am going to conduct a science experiment.

I will take various guns, Glocks, Kimbers etc, and place them around various magnets (of strength) for various amounts of time and see if it affects anything.

I figured by this day and age, someone would have already tried such an odd experiement on their gun.

Looks like I can go down in history...as the first guy who poked his guns with magnets.

griz
October 17, 2005, 03:24 PM
Last year I missed a shot at a local match. At first I attributed it to poor shooting, but obviously the gun had become magnitized and the miss must have sucked all the magnitizm out the barrel. At least that's what I have decided to believe.:neener:

MikeIsaj
October 17, 2005, 03:38 PM
There's a story making the rounds about an officer, armed with a Glock, who found that his pistol would not work after being in a room with an MRI running. Another vote for urban myth.

1. I have taken many inmates for MRI scans. They won't allow you into the room with any substantial metal items on you.

2. When MRI scanners first became common, Fire Engineering magazine did an article on them with regard to firefighting near them. As someone said the magnet does not shut down, even when you cut power to the machine. The magnet exists in a cryogenic environment which allows the field to remain for quite awhile after it is owered down, unless it is "dumped." To make the point they let go of a 12 inch adjustable wrench and clocked it at 85mph as it passed through the chamber. I don't recall how they measured the speed.

3. I also think it is untrue because as we all know, plastic cannot be magnetized.

Mixlesplick
October 17, 2005, 04:48 PM
"Do you think they magnetized you, George?"

icecorps
October 17, 2005, 05:44 PM
Some of the internal parts of my SP-101 "stick" to each other when I disassemble, the hammer and the rod inside the spring especially. No, I have not been over-lubricating.

Sir Aardvark
October 18, 2005, 02:40 AM
Kind of a funny story, since we're on the topic of magnetizing things -

A couple of the Radiologists at the hospital where I work would go into the MRI unit to give injections of contrast media, and, after being in there enough times, the innards of their very expensive Rolex watches would become magnetized and stop keeping time correctly.

Also, one of the housekeeping attendants brought a steel cannister wet/dry vacuum into the unit, and it took 6 people to pull that thing off of the gantry.

As for having your gun becoming magnetized and failing to function after one exposure to an MRI I find hard to believe.

And, anyways, what the hell was the Cop doing bringing a ferrous object into the scan field???; did he think the half-dozen warning signs did not apply to him???.

The_Antibubba
October 18, 2005, 06:17 AM
If you're worried about the effect an MRI would have on the ferrous parts of your pistol, just carry a Bryco.

:D

setxcypress
October 18, 2005, 08:28 AM
If you're worried about the effect an MRI would have on the ferrous parts of your pistol, just carry a Bryco.:eek:

Or would one of those completely free of metal glocks that will go through the airport metal detector. The friend of my 2nd cousin owns one that I've only heard about but never seen, but swears that he has one in 454 Casull.:neener:

artherd
October 18, 2005, 03:25 PM
Thanks for the replies, but I am seeing conflicting opinions about the firing pin, anybody know of any actual stories? When I first posted this I had the unpleasent thought that it was so far out it would be pure speculation.

Then again, it is possible to make metals that cannot be magnatized, right?

If anyone is curious, the idea of magnets has to do with a super gun safe idea I had. I am curious to see if it would be worth following. (In 20 years, when I have the money to actually try it out and go for $$$.)

Go ahead and use your magnetic locks :) I've got 'em on many doors and they work great. We did a test-to-failure at one of my client's companies, and the door *frame* was literally ripped off. Except for a portion of the door frame that was still attached to the magnet!

Hkmp5sd
October 18, 2005, 03:44 PM
In one of the early episodes of Miami Vice, Tubbs uses a huge magnet (about 6" diameter and 2" thick) to hold a backup gun up under his car. It was being left on an airfield while him and Crockett flew south to buy some drugs.

SomeKid
October 18, 2005, 04:04 PM
arther,

That was where I got the idea, however the idea I have is far different. And still a secret. Maybe 20 years from now I will have a million dollar invention, but for now, I am just going to keep working on my BSN.

abaddon
October 18, 2005, 04:04 PM
Besides, didn't you know that Glocks are incapable of attraction? ;)

+1

ChickenHawk
October 18, 2005, 04:34 PM
Nah.

Though there have been a couple of stories in the past of Magnetic Resonance Imaging machines yanking firearms from their holsters.
Justin, that was in the Jet Li movie, "The One".

Just about everything in that movie was pretty bad science, but a fun movie!

Chickenhawk

45crittergitter
October 19, 2005, 02:29 PM
http://www.defense-training.com/quips/21Aug05.html

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