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To invent, you need a good imagination and a pile of junk. -- Thomas Edison
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Science Supplies from Edmund Scientifics
Coated Magnets
Epoxy/Vinyl Coated 2-3/4" Ring Magnet Epoxy/Vinyl Coated 2-3/4" Ring Magnet
$5.95

These strontium ferrite ring magnets measure 2-3/4" Dia. x 1/2" thick with 1-1/8" Dia. center hole. An excellent value because of their high coercive strength and high corrosive resistance, these magnets have a strength of 110 gauss at 1.5GÇ¥ and a lift of approximately 7 lbs. Each magnet has a protective epoxy/vinyl coating and can be used for a variety of hobby and industrial applications. Slight imperfections in each magnet are possible: manufacturerGÇÖs seconds. Each ring is magnetized on its largest dimension.

Click Here for more information or to order Epoxy/Vinyl Coated 2-3/4" Ring Magnet from Edmund Scientific's

High Power Magnets - Neodymium High Power Magnets - Neodymium
$9.95

Material: Neodymium -- Lift (lb): 12-15 -- Magnetized: Sides -- Dimensions: 1.26" x 0.66" x 0.39" -- The smaller Neodymium magnet offers the power characteristic of rare-earth. Because of their strength, these magnets may be used for anything from high quality speakers to high power DC motors. -- Neodymium rare earth magnets are the strongest permanent magnets. These neodymium magnets are manufactured to N42 grade or better, giving the best trade-off of strength vs price for both educational & industrial applications. North & south poles are through the flat surfaces. Other axes of magnetization are available on special order. -- Neodymium rare earth magnets are the strongest magnets by weight and have multiple uses in science, engineering, industry, magic and more. These magnets have a maximum operating temp. of 80C & a Curie temp. of 310C; tolerance +/-0.05mm. -- Although these magnets are not marked north/south, it is very easy to determine. Simply buy an inexpensive compass and point it at the top or bottom of the magnet. The North pole of the compass will point to the North pole of the magnet. -- Warning -- Can damage computer gear & credit cards. -- Handle with care. 2 magnets can snap together with enough force to break a finger or shatter on impact.

Click Here for more information or to order High Power Magnets - Neodymium from Edmund Scientific's