and if you glue a piece of non-magnetic material -- which could hold
that connector -- it could be even some plastic, to the surface of the
mu-metal , you do not need to worry about disturbing the magnetic conditions
73
KJ6UHN Alex
On 1/2/2017 3:44 PM, Attila Kinali wrote:
On Tue, 03 Jan 2017 11:02:54 +1300
Bruce Griffiths <[email protected]> wrote:
Maybe a waterjet cutter would imapct less on the shielding properties of
tthe mumetal?
I doubt it. mu-metal is pretty sensitive to vibration as well and a
waterjet creates plenty of that. But anealing mu-metal is pretty simple,
if one has enough space to build a furnace in the backyard. All you have
to do is find a wall material that can withstand the 1000-1500°C annealing
temperature and which can be flooded with hydrogen is enough.
Flooding the furnace with hydrogen is not dangerous, as long as the
interior is completely flooded (no oxygen) and the hydrogen leaks
out at well controlled points, where it can burn off. There are
descriptions how to do that out there. The only problem is that you need
enough space around the furnace for the hydrogen flames to not cause any
trouble. Being outside also helps to prevent hydrogen build-ups on the
ceiling while initially flooding the furnace or shuting it off.
Attila Kinali
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