Dave Hinz wrote:

On Thu, 23 Mar 2006 13:33:13 -0600, Jon Elson wrote:


Dave Hinz wrote:



So how do I demag this sucker?



How big is the part?



Roughly 8" x 1.056" x 1.200" before I started removing chunks, curls,
& chips...



For very small parts, I use a Weller soldering
gun, the
kind with the two posts sticking out the front, and the copper "wishbone".
If necessary, I can make a ring of #12 wire that has a bigger opening than
the standard element.



Doesn't apply in this case, but thanks, I do have that type of Weller
iron (along with 3 other Weller irons - all surplus but good stuff)

I really think that you CAN do this with a Weller gun. You will need to
make a
custom copper coil to fit around the part, but it will work on something
this
size. You need a coil about 1.5" diameter, with one or two turns. Hold
the part
at the very end with pliers in one hand, and turn on the soldering gun.
Pass
the part through the copper loop all the way, then draw it back fairly
slowly,
so it takes several seconds to pass all the way through the coil. When
the part
is at least 6" away from the coil, turn off the soldering gun. The part
will
definitely be demagnetized. This procedure will degauss anything but a
high-
strength permanent magnet.

I use this setup all the time to degauss small tools that occasionally
pick up a
strong magnetism.



Jon