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DevilsReject

DevilsReject

Cleveland, OH
February 2007

NOV 29, 2010 06:13 PM

Aaron said:

Otoki said:

Ridley said:

Otoki said:
So why are these things setting the alarm off, while my CHAINMAIL BRACELET never has? I've always wondered. I mean, there should be enough metal in the bracelet to make a small knife blade...



But what is your bracelet made out of? Most jewelry isn't going to set off the metal detector.



Stainless steel. Last time I looked at pocket-knives, they're made of stainless steel as well.

I wouldn't be surprised if gold or silver didn't set it off, since they're such soft metals, but steel?



Stainless steel is stainless because it has a high carbon content, some alloys aren't even magnetic. For what it's worth, my Dad has accidentally gotten on a plane with his pocket knife, it didn't set off the metal detector.



Low carbon content. 0.08% carbon content as compared to regular steel that can range from .2% to 2.1%

SPOILERS! (Click to view)
The process of nickel/chrome plating stainless steel decreases the ferrite of the stainless itself, making it less less or non-magnetic. Anything non-magnetic is usually non-conductive. So they won't produce enough of a signal for the walk-through detector to send up a signal.

Once the stainless is decoratively chrome or nickel plated (to make it shiny and pretty) it becomes a Austenitic (you've basically heated all the ferrite (iron) out of the steel). Ferrite Iron is magnetic, it's also very open to staining, commonly known as rusting which is shitty when it comes to jewelry.

There are different grades and styles of stainless chrome plated steel. The easiest way to describe it is decorative and working stainless steel. Decorative is the stuff you usually see on jewelry, motorcycles, bumpers of cars. Working chrome is usually what you see on knives, tools and things used in machinery.

The main difference between the two is the thickness of the chrome. Chromium when applied correctly can extend the life expectancy of a tool by a long time since they are less likely to corrode.

A completely stainless steel pocket knife is expensive, most pocket knives claim to be stainless but in fact are just decoratively chromed cheap stainless. The good ones are 400 series stainless and mertensic which includes a process called tempering and usually they add tungsten to increase wear from heat. Tungsten is paramagnetic which means it has a very weak magnetic field, which means it doesn't conduct well, but it will heat up very well. Hence the reason filaments in light bulbs are usually Tungsten because it holds up so well to heat.

In the cheaper stainless knives, the blade itself may be stainless, but the handle/folding mechanisms may not be stainless, but rather polished steel. Polished steel will set off a metal detector.



magnets, how do they work?

Stiles

Stiles

Oakland, CA
November 2002

NOV 29, 2010 11:27 PM

Certain grades of stainless and titanium won't register on certain metal detectors (both handheld and fixed) in use in airports and other places. Ask any frequent flyer with a big titanium/stainless rod or plate in a formerly broken bone.

Newer detectors are more sensitive than older units and more likely to catch things, all else being equal.

Tadzi

Tadzi

Greeley, CO
April 2003

NOV 30, 2010 12:54 PM

Stiles said:
Certain grades of stainless and titanium won't register on certain metal detectors (both handheld and fixed) in use in airports and other places. Ask any frequent flyer with a big titanium/stainless rod or plate in a formerly broken bone.

Newer detectors are more sensitive than older units and more likely to catch things, all else being equal.



true. i have a metal bar in my back. hasnt caused any additional problems. but my ubiquitous facial hair more than compensates for it.

Coyotemike

Coyotemike

USA
May 2006

NOV 30, 2010 01:01 PM

Tadzi said:

Stiles said:
Certain grades of stainless and titanium won't register on certain metal detectors (both handheld and fixed) in use in airports and other places. Ask any frequent flyer with a big titanium/stainless rod or plate in a formerly broken bone.

Newer detectors are more sensitive than older units and more likely to catch things, all else being equal.



true. i have a metal bar in my back. hasnt caused any additional problems. but my ubiquitous facial hair more than compensates for it.



Don't people with metal implants/screws/rods/robotics get a card from the doctor who upgraded them to present to the TSA?

mydogfarted

mydogfarted

Oakland, NJ
June 2003

NOV 30, 2010 01:28 PM

I didn't get anything from the doctor. I've got a plate and six screws in my collarbone. Hasn't tripped it yet.

Coyotemike

Coyotemike

USA
May 2006

NOV 30, 2010 02:31 PM

mydogfarted said:
I didn't get anything from the doctor. I've got a plate and six screws in my collarbone. Hasn't tripped it yet.



Guess you're not much of a cyborg, then.

Otoki

Otoki

SUICIDEGIRL

Minnesota, USA

NOV 30, 2010 04:19 PM

DevilsReject said:

Aaron said:

Otoki said:

Ridley said:

Otoki said:
So why are these things setting the alarm off, while my CHAINMAIL BRACELET never has? I've always wondered. I mean, there should be enough metal in the bracelet to make a small knife blade...



But what is your bracelet made out of? Most jewelry isn't going to set off the metal detector.



Stainless steel. Last time I looked at pocket-knives, they're made of stainless steel as well.

I wouldn't be surprised if gold or silver didn't set it off, since they're such soft metals, but steel?



Stainless steel is stainless because it has a high carbon content, some alloys aren't even magnetic. For what it's worth, my Dad has accidentally gotten on a plane with his pocket knife, it didn't set off the metal detector.



Low carbon content. 0.08% carbon content as compared to regular steel that can range from .2% to 2.1%

SPOILERS! (Click to view)
The process of nickel/chrome plating stainless steel decreases the ferrite of the stainless itself, making it less less or non-magnetic. Anything non-magnetic is usually non-conductive. So they won't produce enough of a signal for the walk-through detector to send up a signal.

Once the stainless is decoratively chrome or nickel plated (to make it shiny and pretty) it becomes a Austenitic (you've basically heated all the ferrite (iron) out of the steel). Ferrite Iron is magnetic, it's also very open to staining, commonly known as rusting which is shitty when it comes to jewelry.

There are different grades and styles of stainless chrome plated steel. The easiest way to describe it is decorative and working stainless steel. Decorative is the stuff you usually see on jewelry, motorcycles, bumpers of cars. Working chrome is usually what you see on knives, tools and things used in machinery.

The main difference between the two is the thickness of the chrome. Chromium when applied correctly can extend the life expectancy of a tool by a long time since they are less likely to corrode.

A completely stainless steel pocket knife is expensive, most pocket knives claim to be stainless but in fact are just decoratively chromed cheap stainless. The good ones are 400 series stainless and mertensic which includes a process called tempering and usually they add tungsten to increase wear from heat. Tungsten is paramagnetic which means it has a very weak magnetic field, which means it doesn't conduct well, but it will heat up very well. Hence the reason filaments in light bulbs are usually Tungsten because it holds up so well to heat.

In the cheaper stainless knives, the blade itself may be stainless, but the handle/folding mechanisms may not be stainless, but rather polished steel. Polished steel will set off a metal detector.



magnets, how do they work?



Wow. Well. Thank you for that.eeek

mydogfarted

mydogfarted

Oakland, NJ
June 2003

NOV 30, 2010 05:32 PM

Coyotemike said:

mydogfarted said:
I didn't get anything from the doctor. I've got a plate and six screws in my collarbone. Hasn't tripped it yet.



Guess you're not much of a cyborg, then.



Nope. More like GiR.

Stiles

Stiles

Oakland, CA
November 2002

NOV 30, 2010 06:17 PM

DevilsReject

DevilsReject

Cleveland, OH
February 2007

NOV 30, 2010 08:44 PM

Coyotemike said:

Tadzi said:

Stiles said:
Certain grades of stainless and titanium won't register on certain metal detectors (both handheld and fixed) in use in airports and other places. Ask any frequent flyer with a big titanium/stainless rod or plate in a formerly broken bone.

Newer detectors are more sensitive than older units and more likely to catch things, all else being equal.



true. i have a metal bar in my back. hasnt caused any additional problems. but my ubiquitous facial hair more than compensates for it.



Don't people with metal implants/screws/rods/robotics get a card from the doctor who upgraded them to present to the TSA?



No.

I have enough surgical stainless implanted into my shoulder that i could probably melt it down and make you a "keep the aliens out of my HEADZ!" helmet.

Not to mention some titanium bands in my knee area.

and there is that plate in my head that every time Catherine revved up the microwave, I'd piss my pants and forget who I was for about half an hour or so ( i kid, i kid)

I haven't set off a metal detector, but i tell the TSA agents just in case, and they tell me not to worry about it.

Coyotemike

Coyotemike

USA
May 2006

NOV 30, 2010 08:46 PM

Kinda makes me wonder about the differences between surgical steel and the steels discussed above that I could have replied to, but didn't.

DevilsReject

DevilsReject

Cleveland, OH
February 2007

NOV 30, 2010 09:02 PM

Coyotemike said:
Kinda makes me wonder about the differences between surgical steel and the steels discussed above that I could have replied to, but didn't.



Surgical Stainless Steel is a better grade stainless than what is used for jewelry and tools.

Implants and equipment that are put under pressure (bone fixation screws, prostheses, body piercing jewelry), are made out of austenitic steel, often 316L and 316LVM, because it is less brittle.



316L and 316VLM are types of chrome or nickel plated stainless steel.

Tadzi

Tadzi

Greeley, CO
April 2003

DEC 01, 2010 11:39 AM

Coyotemike said:

Tadzi said:

Stiles said:
Certain grades of stainless and titanium won't register on certain metal detectors (both handheld and fixed) in use in airports and other places. Ask any frequent flyer with a big titanium/stainless rod or plate in a formerly broken bone.

Newer detectors are more sensitive than older units and more likely to catch things, all else being equal.



true. i have a metal bar in my back. hasnt caused any additional problems. but my ubiquitous facial hair more than compensates for it.



Don't people with metal implants/screws/rods/robotics get a card from the doctor who upgraded them to present to the TSA?



no, but we do have a secret handshake. its wicked-cool, too.

IDGAS

IDGAS

Jackson Heights, NY
March 2004

DEC 02, 2010 05:44 PM

Time for a laugh from the good people at Reason Magazine

Let's Play, "Can You Guess Which Headline Is Satire?"
Today's challenge:

  • Man Arrested After Ejaculating During TSA Pat-Down
  • Elected Official Says TSA Pat Downs Promote 'Homosexual Agenda'

Make your guess. Then click here and here to see how you did. Winners get a valuable prize.*

(*Note: There is no valuable prize.)


motorfirebox

motorfirebox

Pittsburgh, PA
March 2004

DEC 02, 2010 05:47 PM

I cheated, I already saw the real news item. So, so sad.

semiretiredpunk

semiretiredpunk

USA
March 2007

DEC 02, 2010 06:08 PM

And I saw the Onion in my FB feed. Can I still win?
...Wait, what!? This just keeps looking more and more fucked up. mad

mydogfarted

mydogfarted

Oakland, NJ
June 2003

DEC 02, 2010 06:53 PM

IDGAS said:
Time for a laugh from the good people at Reason Magazine

Let's Play, "Can You Guess Which Headline Is Satire?"
Today's challenge:

  • Man Arrested After Ejaculating During TSA Pat-Down
  • Elected Official Says TSA Pat Downs Promote 'Homosexual Agenda'

Make your guess. Then click here and here to see how you did. Winners get a valuable prize.*

(*Note: There is no valuable prize.)




Doesn't one prove the other? tongue

Chrysis

Chrysis

SUICIDEGIRL

Ohio, USA

DEC 07, 2010 08:52 PM

FearTheReaper said:

alyctes said:

Clidna said:
I would think you can't x-ray breast milk for the same reason you can't microwave it - it destroys the beneficial properties of it.



The amount of x-rays needed for imaging is a lot smaller than the amount you need for cooking something. Otherwise, medical x-rays would be life-threatening.



X-rays don't have any effect on breastmilk based on what I've read. You get more radiation from flying than you would going through the x-ray.



This is what a congresswoman quoted also. She said that what you'd experience in walking through one of these scanners would equal two minutes of airtime. Except ..

Totally different kind of radiation. Scatter radiation from an x-ray machine is very harmful [obviously?]. If you got more of it from flying, frequent flyers and pilots would die of radiation poisoning yearly, and / or we wouldn't have to wear protective aprons and shields in dentists offices, or leave the room every time while x-raying patients to avoid the possibility of being hit by ricochet [scatter].

Airplane radiation is cosmic and inconsequential. Gamma radiation .. well, is something to fuss about.

MisterGone

MisterGone

Minneapolis, MN
March 2006

DEC 13, 2010 08:58 PM

Just as I was starting to feel safe from those evil Muslim 10%ers someone had to ruin my calm with science. Pornoscanners trivially defeated by pancake-shaped explosives.
It can however still detect french toast.

Otoki

Otoki

SUICIDEGIRL

Minnesota, USA

DEC 14, 2010 07:39 AM

MisterGone said:
Just as I was starting to feel safe from those evil Muslim 10%ers someone had to ruin my calm with science. Pornoscanners trivially defeated by pancake-shaped explosives.
It can however still detect french toast.



Oh good. I feel so safe now.whatever

thefreak

thefreak

NEWSWIRE

Gardner, MA

JAN 25, 2011 01:15 PM

One woman has won a lawsuit.

A woman who sued the Transportation Security Administration for exposing her breasts during a patdown at a Texas airport has won a 'nominal' payment.

Lynsie Murley, 24, filed a lawsuit against the TSA last year for negligence and intentional infliction of emotional distress.

She claimed that the May 2008 incident at Corpus Christi airport left her 'extremely embarrassed and humiliated'.

Ms Murley will receive the nominal sum from the government as part of a legal settlement, according to The Smoking Gun.

Her lawyer Jerry McLaughlin refused to divulge exactly how much his client is receiving but said it was a small amount.

Mr McLaughlin reportedly laughed loudly when asked if the negotiated payment was around six figures.

He said that the amount was, 'Way less than that. It wasn't a whole lot of money'.

Ms Murley 'was never interested in the money', Mr McLaughlin said, adding that she 'would not have filed a lawsuit if TSA officials had simply sent her a letter of apology'.

She claimed that she was 'singled out for extended search procedures'.

A TSA agent is alleged to have frisked Ms Murley and 'pulled Plaintiff's blouse completely down, exposing Plaintiff's breasts to everyone in the area'.

The TSA are accused to have 'joked and laughed about the incident for an extended period of time'.

After Ms Murley left the security line to be 'consoled by an acquintance who had brought her to the airport', she returned to the line only to be told by a male TSA woprker that he wished he had been there when she passed through the first time.

According to Ms Murley, the officer added that 'he would just have to watch the video'.

Ms Hurley was awarded her settlement soon after she gave her deposition to government lawyers.
Mr McLaughlin said the agreement gave his client 'some justice'.


Good for her. Here's hoping.

mydogfarted

mydogfarted

Oakland, NJ
June 2003

JAN 25, 2011 02:03 PM

Gov. 'The Body' sues the TSA


MINNEAPOLIS — Former Minnesota Gov. Jesse Ventura is suing the Department of Homeland Security and the Transportation Security Administration, saying full-body scans and pat-downs at airport checkpoints are violating his rights.
Ventura filed his lawsuit Monday in federal court in Minnesota, claiming the new security measures violate his right to be free from unreasonable searches and seizures.

He's asking a federal court to order officials to stop subjecting him to these searches.

Ventura was governor of Minnesota from 1999 through 2002. He now hosts the television program "Conspiracy Theory."

The suit says Ventura had a hip replacement in 2008, and his titanium implant sets off metal detectors.


dennissg

dennissg

Asheville, NC
August 2010

JAN 25, 2011 02:30 PM


dennissg

dennissg

Asheville, NC
August 2010

JAN 25, 2011 02:35 PM


IDGAS

IDGAS

Jackson Heights, NY
March 2004

JAN 25, 2011 03:34 PM

Has this been posted yet?
zoom image

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