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Tool Talk Discussion Forum

Demagnetizing tools

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Ebbsspeed

09-10-2007 18:18:10




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Seems like a lot of my screwdrivers and drill bits have become magnetized, and due to there being grinding dust and drilling chips on my bench and in the tool drawers, I end up having a lot of crud sticking to my tools. Usually a quick rap against the vise will knock them off, but it's a pain in the assumption to have to constantly do that. Is there any way to demagnetize them? Thanks!




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soundguy

09-11-2007 10:32:25




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 Re: Demagnetizing tools in reply to Ebbsspeed, 09-10-2007 18:18:10  
Got a degaussing coil for an old CRT?

Bulk tape erasor should work too..

Soundguy



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dobber

09-10-2007 21:30:00




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 Re: Demagnetizing tools in reply to Ebbsspeed, 09-10-2007 18:18:10  
Just hold between the poles of a horse shoe type magnet not touching it and then pull tool away and should demagnetize it. Can do same thing by holding close to but not touching a disk type rare earth magnet and pulling it away. Lots of demagnetizers made out there but another thing I use is placing a plate in between poles of armature growler and then dragging tool or whatever it is you want to demagnetize between growler poles and away from growler while it is turned on. Basically the same thing what the commercial demagnetizers are you see. If you have lots of machine type tools or tooling a demagnetizer is a good investment. wttools.com enco.com mscdirect.com

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Ted in NE OH

09-10-2007 20:38:09




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 Re: Demagnetizing tools in reply to Ebbsspeed, 09-10-2007 18:18:10  
Get an old electric clock take the sealed mechanisim out of the iorn core and pass the screwdriver through the hole.



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Gerald J.

09-10-2007 20:36:55




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 Re: Demagnetizing tools in reply to Ebbsspeed, 09-10-2007 18:18:10  
Weller soldering gun. The type with the two rods and a copper wire type element between them. Put the magnetized tool in the loop (anywhere doesn't have to get hot), pull the soldering gun trigger, pull the tool out while holding the trigger. The decaying AC magnetic field does the work.

Gerald J.



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Tim Casbolt

09-10-2007 19:06:00




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 Re: Demagnetizing tools in reply to Ebbsspeed, 09-10-2007 18:18:10  
You can buy a brand new demagnetizer off ebay for around $20-30. Very handy.



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Davis In SC

09-10-2007 19:23:30




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 Re: Demagnetizing tools in reply to Tim Casbolt, 09-10-2007 19:06:00  
Those Demag units Tim mentioned are good. I keep one by the surface grinder at the shop, I have had it for at least ten years, and it still works. They are not meant for continuous use, but they do have a thermal breaker, if it stays on too long.



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msb

09-10-2007 18:55:58




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 Re: Demagnetizing tools in reply to Ebbsspeed, 09-10-2007 18:18:10  
A single coil wound so the center is open. Hook it up to a battery and push the tools into the center of the coil aqnd pull them back out.



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Coloken

09-10-2007 19:47:25




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 Re: Demagnetizing tools in reply to msb, 09-10-2007 18:55:58  
Works better if it is hooked to AC ..just pass it through the coil. I used a field coil from a generator is sieres with a light bulb to limit the current.



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