Magnetic Shielding

[CLaNZeR]

Now thats interesting and easy enough to try out.
Thanks for the link.

Regards

Sean.

Ever consider building some Halbach arrays to put on the rotor? They amplify their magnetism on one side and cancle it on the other. It could *perhaps* help with these sticky points.

http://www.matchrockets.com/ether/halbach.html

[CLaNZeR]

Just to let you know.

The material arrived, cost a fortune, delivery from USA to UK was more than the material, Customs hammer you a extra 17.5% and at the end of the day you get a roll of 1 inch tin foil that seems to have as much magnetic shielding as a piece of paper LOL

They state in the instructions that you can even wrap your magnets in it, why??? it makes no difference !!!

Do not waste your money, I have played with this material all week, from making a sandwich to keep the air space in the equation to wrapping a whole coil in the stuff.
I see no shielding here of magnetic fields at all, maybe ideal for distant shielding of speakers etc etc but as far as trying to divert the magnetic field to weaken it, a waste of time.

Well you learn and onto the next experiment!

Regards

Sean.

[konduct]

How big are the magnets you are trying to shield?  Neo / Ferrite?

[CLaNZeR]

I have tried every magnet I have here, and that is a lot of different sorts LOL

The weakest ones I have are ferrite typical kidz magnets Painted Red at one end and struggle to pick up a washer! and even wrapping a layer of this stuff with a fair of bit of air space the field is very prominent.

Have tried various lengths to try divert the field but still seems the same. The only insteresting thing I did find was by playing a small strip on the end of my magnetic spiral wheel, the kick back did seem to increase.
Will go back and play some more when I get time, at the moment, got yet another wheel on the milling machine!!

Regards

Sean.

How big are the magnets you are trying to shield?  Neo / Ferrite?

[djancak]

Thanks for the warning. I think perhaps you should post this warning in the "fraudulent offers" section of the forum too.

Just to let you know.

The material arrived, cost a fortune, delivery from USA to UK was more than the material, Customs hammer you a extra 17.5% and at the end of the day you get a roll of 1 inch tin foil that seems to have as much magnetic shielding as a piece of paper LOL

They state in the instructions that you can even wrap your magnets in it, why??? it makes no difference !!!

Do not waste your money, I have played with this material all week, from making a sandwich to keep the air space in the equation to wrapping a whole coil in the stuff.
I see no shielding here of magnetic fields at all, maybe ideal for distant shielding of speakers etc etc but as far as trying to divert the magnetic field to weaken it, a waste of time.

Well you learn and onto the next experiment!

Regards

Sean.