Demagnetize tool

[A K]

I am trying to demagnetize this vise grips.

I tried the method where you hit it with a hammer, but it does not work.

[Bill]

Heat it up.

[Xeno]

Hunt up one of the old cassette tape head demagnetising tools. I've used them before with some degree of success on tools like screwdrivers. They work on the principle of a reducing AC current with its associated magnetic field.

[Art Todesco]

Or, a bulk tape eraser. Like these:

[croy]

If you have a soldering gun...

Energize the gun and slowly move each tip of the vise grips in and out of the loop of the soldering gun tip.

[Xeno]

Yep, that would probably work even better given the very large size.

[trader_4]

Must be a hell of a big soldering gun or a very small vice grip for that to work.

[gfretwell]

If you still have something around with a big transformer, laying the pliers on the yoke will do it. A doorbell transformer may work but the bigger the better.

[A K]

I will try it.

I have a Benzomatic propane unit.

Andy

[mickey_4]

Spray them with the original formula WD-40 and let the WD-40 soak into the metal for a few hours.

[Ralph Mowery]

You will have to heat it to about 1500 deg F. This may be hot enough to take the temper out.

Look up Curie temperature for details.

[Fred McKenzie]

Use a soldering gun. Replace the tip with a loop of heavy copper wire. Pass the tool through the loop several times.

Fred