My Police 3 is magnetic? A picture

misterjuiceman said:
I've heard this can sometimes happen because of the heat treatment. did your knife come like this?
Click to expand...

Honestly I'm not sure. I just had it sitting out on my kitchen counter last night, and I slid it over next to the two screws in the picture. When I moved the knife the screw moved as well.


It's also weird that the tip of the knife is the strongest magnetic attraction as well. The very end I can move around a pair of toe nail clippers, but the other end (where the pivot is) won't hardly do anything.
Sometimes I have a flash light in pocket next to the knife, and rubs up against my lights (I know this because I hear it constantly and the finish has been taken off a few of my lights where it rubs).
 
texas gun person said:
Honestly I'm not sure. I just had it sitting out on my kitchen counter last night, and I slid it over next to the two screws in the picture. When I moved the knife the screw moved as well.


It's also weird that the tip of the knife is the strongest magnetic attraction as well. The very end I can move around a pair of toe nail clippers, but the other end (where the pivot is) won't hardly do anything.
Sometimes I have a flash light in pocket next to the knife, and rubs up against my lights (I know this because I hear it constantly and the finish has been taken off a few of my lights where it rubs).
Click to expand...

my understanding is that properly heat treated steel shouldn't become a magnet like that, but I'm not 100% sure on that. maybe someone else can chime in about that.
 
I've magnetized knife blades before. One I was working on installing a subwoofer in a car with a very large magnet and I stuck my knife to it so I wouldn't accidentally kneel on it crawling around. It would make my old crt monitors go crazy.

You mentioned that it seems strongest at the tip. Your picture makes it look like there has been some major reworking on the tip of your knife. It may be possible due to heat or just that much grinding/sharpening (depending on what was used) that the tip became magnetized.

I have also heard that some of the sharpening machines that companies use have strong magnets to hold the blades and they occasionally come from the factory magnetized.
 
You can undo it several ways. The first I don't recommend with a knife, but dropping it on a hard surface will kill it. The degauss or demagnitizer like they use for wiping data will work. Lastly (and least expensive) is to go to Sears and buy one of those magnets use make screw drivers magnetic. It will have an arrow on it. You need to find out which is the north pole of your knife and swipe the magnet you got from Sear the other direction across the blade. It's that simple.
 
...and don't worry about the heat treat. The guy was probably thinking about when they heat the balde to non-magnetic. They don't stay in that state though. My guess is it happened after the heat treat when the put the edge on the blade.
 
I don't know how long you have had the knife, but over time my kershaw vapor developed a magnetic charge. I am fairly certain that it came from repeated sharpenings slowly building a charge. I have seen the same thing happen to sharpening steels.

I didn't worry about it, it didn't effect the knife's performance. Actually it came in handy on the construction site a couple of times. I had the knife for nearly five years before it became magnetic though.

If the knife still works and it being magnetic won't damage your flash drives I wouldn't worry about it. Of course I could be wrong, if what I think is happening is impossible someone please let me know.
 
i have noticed my sebenza also does this. i think its either from sharpening or being next to my cell phone
 
I'm pretty sure that sharpening isn't going to cause your blades to be magnetic, unless you're grinding for a long period of time on a belt sander or something.

GWashington1732 said:
Whack it, gently, with another piece of metal, that should demagnatize it.
Click to expand...

It won't. You need quite a bit of shock to cause a magnet to demagnetize.

If you want to demagnetize your blade, use the soldering gun trick. I actually just did this a couple hours ago because I was sharpening my SAK and noticed that it was sticking to my metal DMT plate. I took it to my soldering gun, and the magnetism was gone.
 
jackman2 said:
If it was in your pocket with a cell phone, that may have done it. The little speaker in my blackberry has a relatively strong magnet in it. If it is in contact with it for a long period of time it could become magnetized.
Click to expand...

Blackberries have a magnet/sensor built into their phone, so when you put it in the pouches/sheaths specially built for them, it knows when to "sleep". I don't own a Blackberry myself, but I guess they're pretty strong. There have been stories of these magnets messing up credit cards and keycards.
 
It has been years since I have seen a speaker with a magnet in a cell phone. The device they have used for the last 10 or more years doen't have a magnet on it. It is a crystal, of sorts.
 
well then my BB had an extremly strong magnetic like crystal cause lots of stuff stuck to it.
mine could be from my workplace
 
Socom Elite said:
well then my BB had an extremly strong magnetic like crystal cause lots of stuff stuck to it.
mine could be from my workplace
Click to expand...

^^^Read 3 posts above yours, buddy. ^^^

Nothing to do with the speaker.

Many newer phones, like iPhones or Droids have magnetometer sensors for their built-in compasses and whatnot. If I get even small magnet near it, it screws up the compass. Like within a foot or 2. Even the tiny speakers in my earbud headphones mess with it.
 
You must log in or register to reply here.
Back
Top