How to shield a magnet

[kermit911]

What can I store a strong magnet in to protect things around it? Like tv's, monitors, stupid little paperclips, etc.

[ugly_bob]

a lead box

[jake-the-peg]

http://www.mumetal.com/mumetal_specifications. html

[Rabelais]

Basically materials that are attracted to magnets block magnetic field, the thicker the material the better the blocking, so stick it in an iron box. A lead box would be a stupid idea unless your magnet was also radioactive.

[ugly_bob]

hmm, you may be right. Seems lead is no better than air.
thinking about it, seems logical, since you need ferrous material for magnetism.
http://www.physlink.com/education/askexperts/a e512.cfm
have a look down the bottom for ways which magnets are transported in planes.

[jake-the-peg]

Just to elaborate mu metal is a nickel allow with a very very high magnetic permeability and is used in shielding manetic fields.

It's about $20 per foot (15" width) and about $400 for a plate about a meter square

http://www.lessemf.com/mag-shld.html

I don't know about buying in the UK

[kermit911]

Could I fabricate somthing at home? Like a steel box, with a wood frame around the outside, then a larger steel box around that? That should absorbe a lot of the magnetic field, right? Maybe... Any ideas?

[Hamish]

dont you mean very low jake??