Another Courthouse Security Tale

The stainless steel used in good quality cages is grade 316, an austenic alloy that is largely non magnetic and thus does not register as much on magnetometers as the martensitic stainless steel grades 410, 420, etc that are used in quality cutlery. The latter are easily magnetized and not quite as good in corrosion resistance, but they can keep a fine edge, something grade 316 is pretty poor at.

 

I can attest to this. I have a 316L stainless device from MaleChastityNow. I finally was brave enough to go through airport security in my full balltrap Contender cage. I’ve gone through in my GlansArmor2 without tripping the magnetometers.

My full Contender cage from Malechastitynow did not bother the metal detector at two airports.

My wife kept me in the cage during our trip door to door, and praised me for my behavior during the vacation. She’s now treating the Contender as something that calms me down and keeps me good. The GlansArmor required more self control for me not to grip and fondle my balls or lower shaft while I’m erect ... she has strict no touching rules. ​

If you don’t heat up 316L too much it won’t become magnetic.

 

I was almost certain when me and my mistress we're going to enter the winter fest at our local amusement park that my cage would set the gates off.

The gate did indeed go off but it was due to the little pocket tool which I had forgotten was attached to my keys.

After removing my keys me and my cage made it through undetected

 

Hey there!

Funny story.... Yesterday I went to the shops. I went into one big department store with the sensor devices at the entrance... And the alarm went off!!!!!!

I was wearing my steel device as always!!!

I also had my keys in hand... Rather a big bunch!!!!

The team member said the sensors go off when there's metal close by!!!! So I waved my keys as a distraction!!!

There's no real security there... No risk of a pat down or anything!!! Plus I was going IN!!! So needless to say I was a tad worried for the exit as the same sensor things are located there too!!!

No a skerrick of a noise though!!!!

Can't confirm my device set off alarm... But thought this might make some people chuckle at least!!!

Kindest regards

J.

 

Interesting. So if I check my Bon4 with a magnet, that might give me some idea.

 

Man, what airports are y'all flying from that still use the magnetic detectors? My local has those glass scanning booths you walk have to stop in and turn sideways. It once picked up a couple of Altoid mints I had wedged in my pocket.

Although, a couple of years ago, Mrs Edge unlocked me and removed the cage for a flight. I took a fast shower, and forgot to remove the stainless steel cuff ring. They asked me to pass through the booth twice, then let me go.

It wasn't until getting ready for bed that night that I realized I was still wearing the ring. Obviously they spotted it; they were probably just not inclined to ask me to remove it.

 

I paid for the background check to kick it old school ... so I could go through the metal detectors rather than the imaging scanners. I’m surprised my Contender and GlansArmor 316L stainless is so nonferrous and low mass not to trip.

My belt buckle trips the metal detector.

Before I paid for the “fast lane”, I would show up a little early, opt out of the scanner, and ask for a pat down. I did give up for a while and just went through the imaging scanner... but only in PA jewelry, not chastity. I’ve had pat downs in chastity and it’s never been a problem.

The only time I got pulled to a private room for a more in-depth inspection was after I got pierced. No story there. No one looked at my junk. It wasn’t sexy. Sorry folks.

 

Metal detectors, such as those used in airports, will detect ANY metal, not just those that can be magnetised. So using a magnet on your chastity device is not going to tell you whether or not the metal detector will be triggered by it. The criteria for whether your device will be detected are, as others have said, the amount of metal in the device and how sensitive the detector is.

 

Actually, different metals produce different magnetic echo strengths in response to the pulses sent by the typical gate-style airport metal detector, and it takes much less of a ferromagnetic steel mass to exceed the detection threshold than a less magnetizable steel. So yes, a massive 316 cage is likely to be detected anyway, but a minimalist one (the MCN Contender is a good example of such a design) is likely to pass below threshold whereas a tiny knife blade of even lesser weight/volume would still trip the detector. By the way, some other metals produce an even lesser echo at similar volume (e.g. titanium, which I guess is a good thing for wearers of titanium bone implants ).

 

A metal detector works by transmitting an electromagnetic field. If a metal is completely non-magnetic, it won’t be detected. It’s pretty simple. If it’s somewhat ferrous, it may be detected depending on the field strength and the setting on the device.

I’m not sure how you think a metal detector works and what it’s sensitive to, otherwise.

We’ll break out Maxwell’s equations later

 

If I read these comments on Quora correctly then non-ferrous metals can be easily detected: https://qr.ae/TDd2vi

 

What confuses things is that there are 3 main technologies used in metal detectors and they do not have the same detection properties.

• Beat Frequency Oscillation detectors (the oldest style) essentially react to the change in inductance of a coil when a metal object comes within range. These react much more strongly to ferromagnetism than mere electrical conductivity. They also do not discriminate well between a close small object and a distant large one.
  
• Very Low Frequency detectors have two concentric coils that act much like radio antennas. One emits an electromagnetic wave that causes eddy currents in conductive materials within range. These eddy currents result in the material emitting a wave of similar frequency that is detected by the second coil. For these detectors, ferromagnetism is not much of a factor whereas electric conductivity is. By measuring phase differences between emitted and received wave, these detectors can actually discriminate between the signatures of different target materials.
• Pulse Induction detectors (the type used most commonly in portal-style detectors) emit very short pulses and measure the time delay of the echoing pulses sent back by metals subjected to the original electromagnetic pulse. By measuring the minuscule delay between pulse and echo, they can estimate the distance to the object, which allows for good control over the detection range (so, for instance, a metallic object outside the portal can be ignored, regardless of mass). But like BFO detectors (albeit to a lesser degree), they have a bias towards ferromagnetic materials, and because they lack the discrimination capabilities of VLF detectors, they cannot adjust their detection thresholds for different materials.

 

Well that is probably a good way to kicked off jury duty.

 

Excellent research. I can’t say if i have been through both VLF and PI detectors, but I bet the airport kind were PI, since they are often used for portal type detectors.

Since stainless steel is 1/10th as good of a conductor than iron and carbon steel, I’m guessing that high quality (316L / jewelry grade) stainless also gets past conductivity tests.

https://www.thoughtco.com/table-of-electrical-resistivity-conductivity-608499

This may explain why my Contender cage made it through but my belt buckle didn’t.

 

Just glad I don’t have to deal with them!

 

Will it become magnetic if heated?

 

This explains why I can't sharpen my cage.

 

So if I wear a titanium device it’s less likely to be detected?

 

Yes, it can. That’s correct. So, I guess depending on the welding, or if a part is heated up while being worked, it might pick up some magnetism.