AR15.Com Archives
 I want a big magnet to erase video tapes
Robert2011  [Team Member]
11/10/2004 8:27:13 AM EST
I have an electric video tape eraser, but it shuts down to cool after 5 tapes.

I want a big magnet to replace it

Where can I find one?
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DOW  [Team Member]
11/10/2004 8:32:00 AM EST
Old speaker - the bigger the better, like a subwoofer.
markm  [Team Member]
11/10/2004 8:33:19 AM EST
PERV!
Sin_Bin  [Team Member]
11/10/2004 8:34:48 AM EST
Targeting some M. Moore videos?
Engineer  [Team Member]
11/10/2004 8:34:50 AM EST
Ship them to me - I've got a nice magnetic tape eraser at work.


Robert2011  [Team Member]
11/10/2004 9:01:51 AM EST

Originally Posted By Sin_Bin:
Targeting some M. Moore videos?



Now that's an idea.

Actually I just have mundane video surveillance tapes to erase. We don't want people digging them out of the trash and watching them. We typically record over them ten times then replace with a fresh tape.
Nozzleman  [Team Member]
11/10/2004 9:07:46 AM EST
A speaker magnet will NOT do it! A magnet has a fixed polarity field (think DC). The erasure must be done with an alternating polarity field (read AC). Ergo, you need an AC powered electro-magnet.
Ghostchild  [Member]
11/10/2004 9:34:45 AM EST
we bought ours at work,

Its crazy loud but you can use it for an hour.
Swindle1984  [Member]
11/10/2004 9:37:08 AM EST
Just take 'em home for personal use.
warlord  [Team Member]
11/10/2004 9:44:28 AM EST
Robert2011: A magnet probably won't strong enough, and you'll probably ruin the tape. Those bulk video tape erasers draw a lot of current. If you want one that works for continuous rather than intermittent usage, you'll probably need a professional one and those things aren't cheap.
Robert2011  [Team Member]
11/10/2004 10:48:06 AM EST

Well it looks like science gets in the way of getting a new toy. I guess I'll keep useing the cheapy tape eraser.

After 10 recordings the tape quality supposedly degrades enough it is no longer good for security purposes. I tried a few at home, but the results were not so good. Some would not even work in the video machine. I think the security recorder adds something extra to the tape that messes with regular recorders.
JasonD  [Member]
11/10/2004 10:54:57 AM EST
I hear the actual tape itself burns really well
HKocher  [Team Member]
11/10/2004 11:01:23 AM EST
They would make good reactive targets, just clean up after yourself.
offctr  [Member]
11/10/2004 11:03:32 AM EST
Microwave for a few seconds ?
chrism101  [Member]
11/10/2004 11:59:36 AM EST

Originally Posted By Engineer:
Ship them to me - I've got a nice magnetic tape eraser at work.

www.medical.siemens.com/siemens/en_US/gg_mr_FBAs/images/product_images/magnetom_family/product_overview/maestro_class/MR_prov_SOsonata_SP5.jpg



Ditto- we got a couple of those here too. works good on credit cards too.
Specop_007  [Member]
11/10/2004 12:05:07 PM EST
Clicky

Look for a Neo magnet. Strongest magnet made. You DO NOT need a big one!! 1/2"x1/2" is probably too big!! Much bigger then that and they become a danger to your fingers

You can also find them on Ebay
Clicky

Or here
Clicky
Max_Mike  [Member]
11/10/2004 12:12:31 PM EST
If you are really worried about erasing what is on these tapes a word of warning… even the most powerful video “erasing” magnets will leave some data on the tape no matter how careful you are and even if you then record over the tapes there is a small possibility the some of the original recording can still show if the tape is played. Even if the old video does not show if the tape is rerecorded over with the right equipment the original images can sometimes be recovered.

If the video is really sensitive in nature BURN THE TAPES.

Nimrod1193  [Team Member]
11/10/2004 12:16:40 PM EST
Why not just pull the tape and run it through a shredder?
Sin_Bin  [Team Member]
11/10/2004 12:38:19 PM EST

Originally Posted By Max_Mike:
If you are really worried about erasing what is on these tapes a word of warning… even the most powerful video “erasing” magnets will leave some data on the tape no matter how careful you are and even if you then record over the tapes there is a small possibility the some of the original recording can still show if the tape is played. Even if the old video does not show if the tape is rerecorded over with the right equipment the original images can sometimes be recovered.

If the video is really sensitive in nature BURN THE TAPES.




Yes, +1 on the incinerating idea. If you're in the mood for fun, do a little ritualistic fire dance during the ceremonial burn. Be sure to take pics and post them to this thread.

BigMHoff  [Team Member]
11/10/2004 12:51:31 PM EST
FIRE!![
1Andy2  [Member]
11/10/2004 12:53:59 PM EST
Get a big 9 volt battery. wrap a length of copper wire around your magnet. attach the end of the wire to the battery. Now you got an electro magnet right?
Specop_007  [Member]
11/10/2004 1:19:58 PM EST

Originally Posted By 1Andy2:
Get a big 9 volt battery. wrap a length of copper wire around your magnet. attach the end of the wire to the battery. Now you got an electro magnet right?



No. You need to wrap it around metal, not a magnet.
gaspain  [Team Member]
11/10/2004 1:26:51 PM EST

Originally Posted By BigMHoff:
FIRE!![



+1
Misery  [Member]
11/10/2004 1:28:25 PM EST
Fight Club - Project Mayhem!
SNorman  [Member]
11/10/2004 1:42:41 PM EST
haha Magnet + Battery = Electromagnet.

Makes sense.
sherm8404  [Team Member]
11/10/2004 1:46:02 PM EST
A can of gasoline and a roadflare fix everything!


I challenge you to find a problem that a can of gasoline and a roadflare won't fix.
Sin_Bin  [Team Member]
11/10/2004 1:48:30 PM EST

Originally Posted By SNorman:
haha Magnet + Battery = Electromagnet.

Makes sense.



+2 I think we're the only ones to get the joke!

SDavid  [Team Member]
11/10/2004 2:13:51 PM EST

Originally Posted By Robert2011:
Well it looks like science gets in the way of getting a new toy. I guess I'll keep useing the cheapy tape eraser.



How about just getting the new toy and bringing the tapes to the range.
xxTAPxx  [Member]
11/10/2004 2:16:58 PM EST

Originally Posted By sherm8404:
A can of gasoline and a roadflare fix everything!


I challenge you to find a problem that a can of gasoline and a roadflare won't fix.




MAN O' MAN,

the most funny stories I've ever heard begin with

"I went and got my gas tank for my mower and...'
pv74  [Team Member]
11/10/2004 2:26:08 PM EST
Break appart the tape shell and run the tape through a shredder....
steenkybastage  [Member]
11/10/2004 2:28:59 PM EST

Originally Posted By sherm8404:
A can of gasoline and a roadflare fix everything!


I challenge you to find a problem that a can of gasoline and a roadflare won't fix.



Just under half the voting population of this country...

HEY, you said A can of gasoline (singular).
uns69  [Team Member]
11/10/2004 2:39:41 PM EST
mikejohnson  [Member]
11/10/2004 2:58:47 PM EST

Originally Posted By Nozzleman:
A speaker magnet will NOT do it! A magnet has a fixed polarity field (think DC). The erasure must be done with an alternating polarity field (read AC). Ergo, you need an AC powered electro-magnet.


actually, erasure happens simply by a moving magnetic field.....but a field created by AC happens to be a fast moving field
chrome1  [Team Member]
11/10/2004 4:29:20 PM EST

Originally Posted By sherm8404:
A can of gasoline and a roadflare fix everything!


I challenge you to find a problem that a can of gasoline and a roadflare won't fix.



Toothache ??
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