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Donald
 
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Default build a magnetizer/demagnetizer


"Martin H. Eastburn" wrote in message
m...
John wrote:

Bob Engelhardt wrote:

I built a demagnetizer by making a coil of some (16ga?) magnet wire that
I had laying around. Its resistance is way too low to connect to 110
directly, so I connect it in series with a high-wattage device. E.g., a
blow dryer. Works fine. Bob



To demagnetize I use an Weller Electrical soldering gun:
Insert screw driver or whatever in the loop and pull the
trigger. Withdraw slowly and move it away to arms length.
Let go of trigger. Done. HTH.

IIRC, the loop current is around 100 amps. So it is a 100A-turn winding

when
the tip is good.

I have wound custom windings this way on old scrap units.

Martin

--
Martin Eastburn, Barbara Eastburn
@ home at Lion's Lair with our computer
NRA LOH, NRA Life
NRA Second Amendment Task Force Charter Founder

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I build a simple demagnetizer by using a discarded 1/3 hp motor field coil
using the 220 connection on 120 volts AC and a heavy duty push button Simply
hold the tool in the field, push the button and withdraw the tool.
Don Warner
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