quick question about metal detectors

Things that don't belong anywhere else. (Check first).

Moderators: Moderators General, Prelates, Magistrates

User avatar
semicolon
Posts: 765
Joined: Thu Jun 14, 2007 12:21 am UTC
Contact:

quick question about metal detectors

Postby semicolon » Mon Mar 17, 2008 9:16 pm UTC

if you shoot a bullet through a metal detector, will it go off?

User avatar
MFHodge
Posts: 4246
Joined: Thu Apr 19, 2007 6:27 pm UTC
Location: :noitacoL Raleigh, NC
Contact:

Re: quick question about metal detectors

Postby MFHodge » Mon Mar 17, 2008 9:22 pm UTC

It is unlikely that the bullet would have enough mass to set off the detector. Plus there would probably be some kind of input filter that would see the small, brief reading as electrical noise and would ignore it.
Image

User avatar
Flying Betty
Posts: 1147
Joined: Tue Jul 10, 2007 9:25 am UTC
Location: Next Tuesday

Re: quick question about metal detectors

Postby Flying Betty » Mon Mar 17, 2008 10:06 pm UTC

To make this thread more interesting, I will turn it slightly naughty. So if you walked through a metal detector with something... um... slightly naughty pierced would that make it go off?
Belial wrote:The future is here, and it is cyberpunk as hell.

User avatar
semicolon
Posts: 765
Joined: Thu Jun 14, 2007 12:21 am UTC
Contact:

Re: quick question about metal detectors

Postby semicolon » Mon Mar 17, 2008 10:10 pm UTC

why wouldn't it?

User avatar
aetherson
Posts: 776
Joined: Mon Aug 27, 2007 2:26 pm UTC
Location: Hand Basket...wait where are we going again?

Re: quick question about metal detectors

Postby aetherson » Mon Mar 17, 2008 10:12 pm UTC

Um, i've got a question then for you, for uh, scientific reasons.
Have to make sure and get the variables right before the calculations you see...

How fast will it be moving through the detector? Eh? ;D
and just the once...?



on a slightly less mind in the gutter note, are you sure it's 100% metal?
not all piercings are...
01001101 01100001 01100100 01100101 00100000 01011001 01101111 01110101 00100000 01001100 01101111 01101111 01101011 00100001

|Erasmus|
Branson
Posts: 2643
Joined: Tue Oct 30, 2007 7:53 am UTC
Location: Sydney, Australia
Contact:

Re: quick question about metal detectors

Postby |Erasmus| » Mon Mar 17, 2008 10:14 pm UTC

depends what it's made of... I would imagine that most of the piercings that would go in said places would be made of something that would not set metal detectors off, to save that kind of embarrasment. I'm also not sure if something that small would do it anyway.

case in point: I have a metal screw holding my wrist together, and It didn't set any metal detectors off when I went overseas. Not sure if it's the small size of the thing compared to, say, a knife, or the materials that don't set them off, though. (I would imagine it was size, though).

User avatar
Felstaff
Occam's Taser
Posts: 5175
Joined: Fri Feb 01, 2008 7:10 pm UTC
Location: ¢ ₪ ¿ ¶ § ∴ ® © ™ ؟ ¡ ‽ æ Þ ° ₰ ₤ ಡಢ

Re: quick question about metal detectors

Postby Felstaff » Mon Mar 17, 2008 10:22 pm UTC

If I shoot a guy on a beach who's been traversing up and down with a metal detector for six months wearing the same stained sweater that has clearly been knitted by a parent or grand-parent...


...Would anyone care?
Away, you scullion! you rampallion! You fustilarian! I'll tickle your catastrophe.

User avatar
Insignificant Deifaction
Small Goddess
Posts: 3729
Joined: Fri Jun 29, 2007 2:14 am UTC
Location: Through the mother@#$%ing looking glass.

Re: quick question about metal detectors

Postby Insignificant Deifaction » Mon Mar 17, 2008 10:31 pm UTC

I don't think piercings are large enough to set off a security (for that is what I assume we are speaking of) metal detector, regardless of number. I could be wrong.
Belial wrote:You are giving me the tools to sodomize my vast imagination, and for this I am grateful.

PM Me, if you care for a chat.

User avatar
DJorgensen
Posts: 1503
Joined: Tue Feb 19, 2008 9:24 pm UTC
Location: A small reality, fractured from this one.
Contact:

Re: quick question about metal detectors

Postby DJorgensen » Mon Mar 17, 2008 11:08 pm UTC

Piercings do not usually set of detectors. They are generally surgical steel, or other metals like gold, titanium, or acrylic / organic materials - which as far as I have ever heard do not set of detectors.

EDIT: I used to have a number of body piercings. Never had a problem going through security with them.
trap: a device in which something (usually an animal) can be caught and penned.

User avatar
Insignificant Deifaction
Small Goddess
Posts: 3729
Joined: Fri Jun 29, 2007 2:14 am UTC
Location: Through the mother@#$%ing looking glass.

Re: quick question about metal detectors

Postby Insignificant Deifaction » Mon Mar 17, 2008 11:13 pm UTC

Good to know that that won't be a problem when we go through security. That would be a lot of embarrassment.

Feh, She probably knew all of that anyway.
Belial wrote:You are giving me the tools to sodomize my vast imagination, and for this I am grateful.

PM Me, if you care for a chat.

User avatar
Aperfectring
Posts: 252
Joined: Fri Sep 07, 2007 3:47 am UTC
Location: Oregon (happily)

Re: quick question about metal detectors

Postby Aperfectring » Mon Mar 17, 2008 11:59 pm UTC

Back when I tested one, even change (about $2 worth) was not enough to set a metal detector off. I still strongly recommend you emptying your pockets of change before going through, as it was years ago, and at a very small airport, when I tested it. The metal detector is pretty much only there to pick up on the large things, like steak knives, meat cleavers, and firearms.
Odds are I did well on my probability exam.

User avatar
Kosenjou
Posts: 35
Joined: Fri Feb 15, 2008 2:20 pm UTC
Location: Chicago

Re: quick question about metal detectors

Postby Kosenjou » Tue Mar 18, 2008 12:38 am UTC

I travel quite a bit and I have never had a metal detector go off because of my piercings, don't worry about it.
"The true soldier fights not because he hates what is in front of him, but because he loves what is behind him."
-G. K. Chesterton

User avatar
UmbralRaptor
Posts: 201
Joined: Mon May 21, 2007 5:47 pm UTC
Location: Officially: KC area, Kansas, USA, Sol III
Contact:

Re: quick question about metal detectors

Postby UmbralRaptor » Tue Mar 18, 2008 1:51 am UTC

If it's not ferromagnetic, it's unlikely to set off the metal detector.

(You with the Lox dewer! Stop looking for counterexamples!)
Why do you assume that I exist?

User avatar
'; DROP DATABASE;--
Posts: 3284
Joined: Thu Nov 22, 2007 9:38 am UTC
Location: Midwest Alberta, where it's STILL snowy
Contact:

Re: quick question about metal detectors

Postby '; DROP DATABASE;-- » Tue Mar 18, 2008 2:14 am UTC

I've had shoes with little metal clips that hold the laces set them off. I imagine some are more sensitive than others.
|Erasmus| wrote:case in point: I have a metal screw holding my wrist together, and It didn't set any metal detectors off when I went overseas. Not sure if it's the small size of the thing compared to, say, a knife, or the materials that don't set them off, though. (I would imagine it was size, though).
That could be because the machine just can't pick up such a small amount of metal embedded that deep in your body. It might go off if you had such a screw in your hand.

I don't think I've been through a metal detector since breaking my arms. That could be interesting, since I now have metal rods in both of them.
poxic wrote:You suck. And simultaneously rock. I think you've invented a new state of being.

User avatar
aetherson
Posts: 776
Joined: Mon Aug 27, 2007 2:26 pm UTC
Location: Hand Basket...wait where are we going again?

Re: quick question about metal detectors

Postby aetherson » Tue Mar 18, 2008 3:31 am UTC

when i had braces, they would set them off...of course i had enough metal in my mouth to get hit on by '57 chevys...
01001101 01100001 01100100 01100101 00100000 01011001 01101111 01110101 00100000 01001100 01101111 01101111 01101011 00100001

User avatar
koneko
Posts: 420
Joined: Mon Mar 03, 2008 6:22 am UTC

Re: quick question about metal detectors

Postby koneko » Tue Mar 18, 2008 3:39 am UTC

Piercings and most surgical implants are made from metals that will not set off the detectors, even the handheld ones sometimes.

Think about it this way, they can't have the zipper/fly on people's pants setting it off either so generally itty bitty bits of metal won't do anything.
ImageImage

|Erasmus|
Branson
Posts: 2643
Joined: Tue Oct 30, 2007 7:53 am UTC
Location: Sydney, Australia
Contact:

Re: quick question about metal detectors

Postby |Erasmus| » Tue Mar 18, 2008 12:05 pm UTC

'; DROP DATABASE;-- wrote:
|Erasmus| wrote:case in point: I have a metal screw holding my wrist together, and It didn't set any metal detectors off when I went overseas. Not sure if it's the small size of the thing compared to, say, a knife, or the materials that don't set them off, though. (I would imagine it was size, though).
That could be because the machine just can't pick up such a small amount of metal embedded that deep in your body. It might go off if you had such a screw in your hand.

I don't think I've been through a metal detector since breaking my arms. That could be interesting, since I now have metal rods in both of them.


I'm not quite convinced my wrist is that much bigger than my hand... but i think the surgical steel isn't meant to set them off.

User avatar
Moo
Oh man! I'm going to be so rebellious! I'm gonna...
Posts: 6432
Joined: Thu Aug 16, 2007 3:15 pm UTC
Location: Beyond the goblin city
Contact:

Re: quick question about metal detectors

Postby Moo » Tue Mar 18, 2008 12:57 pm UTC

Kosenjou, I love your avatar.
Proverbs 9:7-8 wrote:Anyone who rebukes a mocker will get an insult in return. Anyone who corrects the wicked will get hurt. So don't bother correcting mockers; they will only hate you.
Hawknc wrote:FFT: I didn't realise Proverbs 9:7-8 was the first recorded instance of "haters gonna hate"

User avatar
b.i.o
Green is the loneliest number
Posts: 2519
Joined: Fri Jul 27, 2007 4:38 pm UTC
Location: Hong Kong

Re: quick question about metal detectors

Postby b.i.o » Tue Mar 18, 2008 1:32 pm UTC

|Erasmus| wrote:I'm not quite convinced my wrist is that much bigger than my hand... but i think the surgical steel isn't meant to set them off.


Right:

If it's not ferromagnetic, it's unlikely to set off the metal detector.

User avatar
segmentation fault
Posts: 1770
Joined: Wed Dec 05, 2007 4:10 pm UTC
Location: Nu Jersey
Contact:

Re: quick question about metal detectors

Postby segmentation fault » Tue Mar 18, 2008 3:21 pm UTC

Flying Betty wrote:To make this thread more interesting, I will turn it slightly naughty. So if you walked through a metal detector with something... um... slightly naughty pierced would that make it go off?


my ears usually dont set them off. they are either too small or surgical steel doesnt set them off.
people are like LDL cholesterol for the internet

User avatar
d3adf001
Posts: 1000
Joined: Thu Mar 29, 2007 4:27 pm UTC
Location: State College, PA
Contact:

Re: quick question about metal detectors

Postby d3adf001 » Tue Mar 18, 2008 4:31 pm UTC

so if i make a knife out of surgical steel ill be ok with detectors? other wise ill have to go obsidian

User avatar
Belial
A terrible sound heard from a distance
Posts: 30450
Joined: Sat Apr 15, 2006 4:04 am UTC
Contact:

Re: quick question about metal detectors

Postby Belial » Tue Mar 18, 2008 4:34 pm UTC

Ceramic works well.

Or a jabbing knife out of extremely hardened rubber.
addams wrote:A drunk neighbor is better than a sober Belial.


They/them

User avatar
segmentation fault
Posts: 1770
Joined: Wed Dec 05, 2007 4:10 pm UTC
Location: Nu Jersey
Contact:

Re: quick question about metal detectors

Postby segmentation fault » Tue Mar 18, 2008 4:40 pm UTC

why wouldnt you go obsidian?

hell just use a pencil, or grow out your fingernails. SS is quite expensive.
people are like LDL cholesterol for the internet

User avatar
Belial
A terrible sound heard from a distance
Posts: 30450
Joined: Sat Apr 15, 2006 4:04 am UTC
Contact:

Re: quick question about metal detectors

Postby Belial » Tue Mar 18, 2008 4:41 pm UTC

Grown out fingernails: Not all that good for stabbing.

Mine go about half an inch past the fingertip, but if I dig them into skin, it takes a great deal of effort to even draw a bit of blood.
addams wrote:A drunk neighbor is better than a sober Belial.


They/them

User avatar
d3adf001
Posts: 1000
Joined: Thu Mar 29, 2007 4:27 pm UTC
Location: State College, PA
Contact:

Re: quick question about metal detectors

Postby d3adf001 » Tue Mar 18, 2008 4:47 pm UTC

Belial wrote:Ceramic works well.

Or a jabbing knife out of extremely hardened rubber.


or Styrofoam

User avatar
Belial
A terrible sound heard from a distance
Posts: 30450
Joined: Sat Apr 15, 2006 4:04 am UTC
Contact:

Re: quick question about metal detectors

Postby Belial » Tue Mar 18, 2008 4:49 pm UTC

Styrofoam? That works?
addams wrote:A drunk neighbor is better than a sober Belial.


They/them

User avatar
segmentation fault
Posts: 1770
Joined: Wed Dec 05, 2007 4:10 pm UTC
Location: Nu Jersey
Contact:

Re: quick question about metal detectors

Postby segmentation fault » Tue Mar 18, 2008 4:53 pm UTC

Belial wrote:Styrofoam? That works?


make them swallow it and constipate them mwahahaha.
people are like LDL cholesterol for the internet

User avatar
d3adf001
Posts: 1000
Joined: Thu Mar 29, 2007 4:27 pm UTC
Location: State College, PA
Contact:

Re: quick question about metal detectors

Postby d3adf001 » Tue Mar 18, 2008 4:55 pm UTC

Belial wrote:Styrofoam? That works?


yep. melt it over a heater. it gets hard when it becomes solid. you can sharpen it into a stabbing shape. (my friends dad worked in a prison and taught us crap like this)

User avatar
segmentation fault
Posts: 1770
Joined: Wed Dec 05, 2007 4:10 pm UTC
Location: Nu Jersey
Contact:

Re: quick question about metal detectors

Postby segmentation fault » Tue Mar 18, 2008 5:06 pm UTC

i hear you can do that sort of thing with a toothbrush and plastic wrap.
people are like LDL cholesterol for the internet

User avatar
SecondTalon
SexyTalon
Posts: 26508
Joined: Sat May 05, 2007 2:10 pm UTC
Location: Louisville, Kentucky, USA, Mars. HA!
Contact:

Re: quick question about metal detectors

Postby SecondTalon » Tue Mar 18, 2008 5:20 pm UTC

Really, any kind of hard plastic can be rubbed into a sharpened point. While it may be good for one jab, sometimes one jab is all you need.

And Belial.. seriously, did you not see the Mythbusters where they made newspaper crossbows and went on a quick tour of the "Makeshift Weapons" museum of the prison? I don't think a styrofoam blade would withstand much use, but .. again.. sometimes one quick jab is all you need.
heuristically_alone wrote:I want to write a DnD campaign and play it by myself and DM it myself.
heuristically_alone wrote:I have been informed that this is called writing a book.

User avatar
segmentation fault
Posts: 1770
Joined: Wed Dec 05, 2007 4:10 pm UTC
Location: Nu Jersey
Contact:

Re: quick question about metal detectors

Postby segmentation fault » Tue Mar 18, 2008 5:22 pm UTC

SecondTalon wrote:While it may be good for one jab, sometimes one jab is all you need.


stand back, my THAC0 is -10!
people are like LDL cholesterol for the internet

++$_
Mo' Money
Posts: 2370
Joined: Thu Nov 01, 2007 4:06 am UTC

Re: quick question about metal detectors

Postby ++$_ » Tue Mar 18, 2008 5:30 pm UTC

Metal detectors detect all metal, not just ferromagnetic metals. They work by inducing eddy currents in the metal and detecting the resulting magnetic field. They will detect metal with an ease related to the electrical conductivity of the metal. Ferromagnetism has nothing to do with it.

And this is common sense, really. If they couldn't detect, say, titanium, there would be a lot of terrorists right now planning to bring titanium guns onto planes. Fortunately, they can.

They are also very spotty. I was stopped once because I had some Sudafed pills in my pocket, and the thing containing the pills had a foil backing. I have also gotten through the metal detector with a belt buckle with a mass about 1000 times that of the foil on that pill thing.

User avatar
Insignificant Deifaction
Small Goddess
Posts: 3729
Joined: Fri Jun 29, 2007 2:14 am UTC
Location: Through the mother@#$%ing looking glass.

Re: quick question about metal detectors

Postby Insignificant Deifaction » Tue Mar 18, 2008 7:40 pm UTC

The problem therein is that having to remove 18 piercings from naughty areas (and a rapidly growing number) would be embarrassing and somewhat time consuming. Hence, it would be nice to know beforehand whether that will be necessary.
Belial wrote:You are giving me the tools to sodomize my vast imagination, and for this I am grateful.

PM Me, if you care for a chat.

User avatar
segmentation fault
Posts: 1770
Joined: Wed Dec 05, 2007 4:10 pm UTC
Location: Nu Jersey
Contact:

Re: quick question about metal detectors

Postby segmentation fault » Tue Mar 18, 2008 7:50 pm UTC

hah

hey everyone in back of me excuse me while i take 18 metal rings out of my genitals thanks.
people are like LDL cholesterol for the internet

User avatar
d3adf001
Posts: 1000
Joined: Thu Mar 29, 2007 4:27 pm UTC
Location: State College, PA
Contact:

Re: quick question about metal detectors

Postby d3adf001 » Tue Mar 18, 2008 7:59 pm UTC

Insignificant Deification wrote:The problem therein is that having to remove 18 piercings from naughty areas (and a rapidly growing number) would be embarrassing and somewhat time consuming. Hence, it would be nice to know beforehand whether that will be necessary.


how do you fit 18 piercings there?

User avatar
segmentation fault
Posts: 1770
Joined: Wed Dec 05, 2007 4:10 pm UTC
Location: Nu Jersey
Contact:

Re: quick question about metal detectors

Postby segmentation fault » Tue Mar 18, 2008 8:03 pm UTC

carefully.
people are like LDL cholesterol for the internet

User avatar
Insignificant Deifaction
Small Goddess
Posts: 3729
Joined: Fri Jun 29, 2007 2:14 am UTC
Location: Through the mother@#$%ing looking glass.

Re: quick question about metal detectors

Postby Insignificant Deifaction » Tue Mar 18, 2008 8:17 pm UTC

Five pairs of parallel piercings-majora
four pairs of parallel piercings-minora

Seriously though, it's important to know what exactly works and what doesn't. Seriously, such iffy metal detectors as mentioned above (recognizing foil but not a belt buckle) would be bane to security, no?

It's not just my personal concerns. There's really no reason to stick to the initial question though, as it has been answered.
Belial wrote:You are giving me the tools to sodomize my vast imagination, and for this I am grateful.

PM Me, if you care for a chat.

User avatar
silent man
Posts: 257
Joined: Wed Oct 10, 2007 7:25 pm UTC
Location: Planet Y
Contact:

Re: quick question about metal detectors

Postby silent man » Tue Mar 18, 2008 9:08 pm UTC

As someone who walks through a metal detector on my way to work every day, I can answer with a definite and reassuring 'maybe?'

Either they calibrate those things by hand every morning, or they're highly dependent on conditions like humidity or something. One day I walk through with my watch (stainless steel, including the armband) and my keys on their 40cm metal chain and nothing happens. The next day, the only metal on my person is the frame of my glasses... *beepbeepbeep*
I sometimes suspect that the 'metal detector' is actually a guy in the next room who pushes a button if you look suspicious.

To boost this post to the status of being almost useful, I have a friend who has a friend who works at airport security. I shall make inquiries.

User avatar
ThorFluff
Ursus Onanis
Posts: 988
Joined: Tue Sep 04, 2007 10:53 am UTC
Location: Stockholm - Sweden
Contact:

Re: quick question about metal detectors

Postby ThorFluff » Tue Mar 18, 2008 9:20 pm UTC

Insignificant Deification wrote:Five pairs of parallel piercings-majora
four pairs of parallel piercings-minora

...
..
.
Va-jingle?
ohgodi'msosorryicouldn'thelpmyself
EsotericWombat wrote:You're... calling the Rolling Stones emo.

It might take a while to gather the lynch mob. no one really planned against this eventuality.


krynd wrote:That'd make an awesome sig. Unfortunately, I'm sure self-sigging isn't allowed...

User avatar
Insignificant Deifaction
Small Goddess
Posts: 3729
Joined: Fri Jun 29, 2007 2:14 am UTC
Location: Through the mother@#$%ing looking glass.

Re: quick question about metal detectors

Postby Insignificant Deifaction » Tue Mar 18, 2008 10:26 pm UTC

No, actually quite soundless. [/jokeslayer] No need to apologize, though.

@silent man: That. . . sounds surprisingly reasonable.
Belial wrote:You are giving me the tools to sodomize my vast imagination, and for this I am grateful.

PM Me, if you care for a chat.


Return to “General”

Who is online

Users browsing this forum: Exabot [Bot] and 29 guests