Re: Rare earth magnets - an idea

My thought was to drill right through the pole end and set the REM's in a row along the face. If positioned so that they were attracted to the pole piece, then the face they presented to the moving coil would be reversed from the original - not that it would make any difference, I suppose. However, the magnetism would be increased .



Perhaps I'll try a row of them on the outside of a pole to start with & see what happens - I have enough magnetos about in all conscience.

Regards,


Kim

"Nick H" <n_highfield@xxxxxxxxxxx> wrote in message news:6olf2sF47p67U1@xxxxxxxxxxxxxxxxxxxxx
Charles Hamilton wrote (snip):

Build yourself a remagnetiser!! Enough plans available here and there and far more satisfying!!


I had a go but being a lazy and tight *&^*%^ I used a couple of coils I had about me. Plenty of turns of nice thick wire but only room for 3/4" diameter cores. So, while I'm generating plenty of Ampere-turns, I fear I may be saturating the (mild steel) cores before reaching a high enough flux density to do the job. Any thoughts?

Also, I once had a mag remagnetised at EMI when I worked there. The 'charger' - which was about the size of a washing machine - didn't have coils and pole pieces as such but a stout copper rod around which one put the keepered magnet. Pressing the foot pedal a couple of times produced a satisfying thud and left the keeper feeling as if it had been welded on!

NHH

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Regards,



Kim Siddorn

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