Review of Magcraft NSN0573 3/8-Inch by 1/8-Inch Rare Earth Disc Magnets, 30-Count

Here's what you do: get 30 plastic push-pins like folks use on cork-boards.
Light a candle, and hold the tip of a pin over the flame for 5 seconds (be careful, etc.), then pull the heated metal pin out of the plastic with pliers. With a few strokes across a file, make sure the bottom of the plastic (where the pin used to be) is flat.
Lay out your 30 magnets, keeping a generous distance between them as they will "jump" at each other and mess up your work. Mix up some 5-minute epoxy and put a very small amount on the plastic, then squish it down onto a magnet. Repeat until you have an armada of thumbtack magnets.
Once the glue is set, carefully carry the magnets to your fridge and try them out. The magnets really like to be in a stack with one another, and may destroy the plastic you've just glued on if several are loose together. This won't be an issue once they are stuck to your fridge door.
These magnets are exactly the right size for this application, and the thumbtack handle makes them very easy to place and remove.





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Product Description:
Rare earth magnets are the strongest type of permanent magnet currently made. They are amazingly powerful for their size and have innumerable uses. These disc magnets are 0.375 inch (9.5mm) diameter and 0.125 inch (3.2mm) thick. They are magnetized through the thickness. They are composed of grade 40 neodymium iron boron magnetic material and are plated in nickel-copper-nickel for a shiny corrosion resistant finish. Their individual pull force is approximately 4 lbs. Maximum working temperature is 176 F (80 C). Magnets may chip and crack if allowed to snap together.

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