like a neodyum (sp?) magnet will have about a 20-30 lbs pull force, what is it for ceramic magnets? (like the black colored ones used to stick stuff to the refrigerator and in elementary schools)
ceramic magnet:
http://www.surplus-electronics-sales.com/Zencart/images/products/213-1003%20Ceramic%20Magnet,%20Round%20Pkg-10.gif
neodium magnet:
http://www.first4magnets.com/ekmps/shops/trainer27/images/f375-3mm-dia-x-4mm-thick-n42-neodymium-magnets-pack-of-25-b12--136-p.gif
thnx
ceramic magnet:
http://www.surplus-electronics-sales.com/Zencart/images/products/213-1003%20Ceramic%20Magnet,%20Round%20Pkg-10.gif
neodium magnet:
http://www.first4magnets.com/ekmps/shops/trainer27/images/f375-3mm-dia-x-4mm-thick-n42-neodymium-magnets-pack-of-25-b12--136-p.gif
thnx